Push-Ups!
November16
Mr. Mendelson wants to know how his P.E. classes are improving in the number of push-ups they can do. This graph shows the number of push-ups each student in his 1st period class was able to do last month and this month.
How much did the mean number of push-ups increase from last month to this month?
It didn’t, it decreased by 2.5: 10+10+15+15+25+25+25+35=160 /8=20 (last months mean:20). 10+15+25+30+30+30+40+40=220 /8=17.5 (this months mean:17.5)
The difference between the first month and the second months average was 7.5 push-ups
The average last month was 20 push ups. this month it was 27.5 pushups. There for the mean increased this month by 7 pushups.
The number of push-ups increased by
7.5 between last month and this month.
I got this by adding all of the #s from last month, and dividing them by 8 and got 20 and did the same with this month also and got 27.5
and subtracted them both and that’s how i got 7.5.
The number of push-ups in 1period class did beetwen this month and last month is 7.5 becuase you add all the numders then divid dy how maney numders there are and i got 20 for the last month .For this month igot 27.5 becuase you do the same thing.the differnts is 7.5.
The mean of push-ups for last month was 20 and this months mean was 27 1/2 so that means that it increased 7 1/2 push-ups done.
the mean number of push-ups increased by 7.
How did you get your answer?
so, we do 10+10+15+15+25+25+25+35 because you have to add all the numbers up as a first step to solving the average. 10+10+15+15+25+25+25+35= 140
next, you divide the sum (140) by the number of students.
140/8= 17.5
you follow the same procedure for the next data table.
10+15+25+30+30+30+40+40=220
220/8=27.5
to find how much the average of push ups increased, you find the difference…i think.
27.5 10.0 can just be simplified to 10, so the push up mean
-17.5 increased by 10.
——-
10.0
haha im in PE
the mean number of pushups increased by 7 because i add the first months number of pushups and it totalled 160 which I then divided by 8 students. The answer was 20. I did then same for this month and it totaled 220 which i divided by 8 and got 27.4. The difference is about 7 pushups.
it goes up by 25.3125 because if you add all the numbers in over all you get 405 then divide it by 16 and you get 25.3125
What is the mean for EACH set of data?
so, the mean of the number of push ups did increase from last month to this month. if you look very closely at the graphs you can see obviously that the mean of the number of push ups increases five push ups from last month to this month. you can see in the first graph that only one person did 35 push ups and in the second graph you can see that a few people did 45 push ups which is way better than one. so this is why I think that the answer is five
How is it obvious in the graph?
So last month the mean of the number of push ups students could do is 20. 10+10+15+15+25+25+25+35=160/8=20
(8=how many numbers there are)
This month the mean of the number of push ups students could do is 27.5. 10+15+25+30+30+30+40+40=220/8=27.5
(8=how many numbers there are)
So the mean number of push ups increased from last month to this month is 7.5
because it increced at least two times and there is now more 25 then 30
How did you get your answer?
the push ups only increase two times and know there only a lot more
How did you get your answer?
Push ups last month was on average was 2. The number of push ups this month was 1.6 . So push ups went down buy 1.6 push ups
How did you find your averages? They seem really low since there were kids that could do 20 and 35 pushups!
I got the mean of both numbers 20 and 48 and subtracted them to get 28
How did you get the mean?
The mean number of push up that increased from last month to this month is 16
How did you find your answer?
The mean increased by 7.5 pushups. To find my i answer first i found the mean of the first month and got 20. Then i found the mean for the second number and got 27.5. Last i subtracted the first and second means and got 7.5 push-ups as my final answer.
i add 10 twice and 15 twice added 25 three times and added 35 ones and got 160. Then I divided 8 160 and got 20. then with the other set I added once and then added 15 once then I added 25 once then I added 30 three times then I added 40 twice and got 220 divided by 8 and got 27.5 and I subtracted and got 7.5 as my answer.
135 divided by 8 = 14
What is this?
the number of push up that increase from last mouth to this mouth is 70 because you would subtract the 220-150=70 and you can check by adding 150+70 and you would get 70
Remember, to find the mean of a set of data, you add up all the values and then divide by how many values you have.
The number of push ups increased by 7 adding up all the first month you get 160 and there are 8 numbers and 160 divided by 8 is 20. For month 2 adding up all the numbers you get 220. There 8 numbers and 220 divided by 8 is bout 27.
Mr Mendelson is p.e class has improve,push-ups last month is class did do, push-ups for inc25,10,and15 who increase and this year is yous 30 and 40 push-ups
I don’t understand your answer Lisbeth!
my answer is 60
How did you find your answer?
30 push ups
How did you find your answer?
for last month it was 20 but for this month they can do 27.5
What is the difference in the means?
it increased by 35 more push-ups because last month there highest was 35 and the highest of this month is 40 ,and the second highest of last month was 25 while the second highest of this month is 30 so when you count the last months and this months push-ups altogether, this month has 35 more push-ups than the last month
How much did the mean of each month change?
none because the mean for the first graph is 8 and the mean for the second graph is 8
How did you find the mean for each of the graphs? Does it make sense that if the data is changing the mean would stay the same?
The mean of the number of pushups increased from last month by 25. I got this by adding up the number in last and all thr numbers in this month and divided this month’s amount whick was 220 by 8 and I got 25
What was the mean of the first month?
The mean for the first month was 20 and the second month was 27.5.It increased by 7.5.
In last month they did not do well in push ups and all the total of push ups was 160, and the mean for it would be 20 because there are 8 student and 160 divided by 8 is 20. In this month the students did better in their push ups and the total of push ups was 220 and the mean for its is 27.5, so in this month the students did better than last month. The End.
How much better did they do?
P.E 1st period has increased in push ups 5.5 after a month. Last month, an average 20 push ups was done per child. A month later, the class has increased on average 25.5 push ups per child. So I subtracted 25.5 with 20 and got 5.5. Therefore on average the class has increased 5.5 push ups more.
Why is there 8 kids in a P.E class?
Good question Walter…lol!
So in the first month the mean is 20 because I added the total of pushup which was 160 and divided it by the number 8 since there are 8 students and got 20. The 2nd month it is 27.5 since the number of pushup was 220 and there was 8 students so divided 220 by 8 and got 27.5 Finally I subtracted 27.5 and 20 and got 7.5 so the increase is 7.5 pushup s total.
the mean increased by 7.5 because when i added all the numbers in the 1st month got 160 then i divided 160 by 8 and got 20 then i added all the numbers in the 2nd month and got 220 then i divided by 8 and got 27.5. after i took 27.5 and 20 then i subtracted them together and got a remainder of 7.5.
The number of push-ups has increased by 5 in the past month.
How has the mean number of pushups changed?
I think the answer is for 10 it went up by 2 and 15 went down by 1 and 35 went down
I don’t understand your answer Michelle. Can you explain some more of your thinking?
The mean increased by 7.5. Last month the class did a total of 160 push-ups and I divided that by 8 and got 20. This month the class did a total of 220 push-ups and I divided by 8 and got 27.5. So the mean increased by 7.5.
I’m going to assume that one dot = one student…
The mean number of push-ups increased by 7.5 from last month to this month.
First, I found the mean of the number of push-ups last month by adding all the numbers together, the total was 160, then I divided it by the number of students which was 8. 160 divided by 8 is 20.
Then, I found the mean number of push-ups this month by doing the same thing. I added all the numbers together, the total this time was 220, then I divided 220 by the number of students, 8, 220 divided by 8 is 27.5.
Lastly, to find out the amount of the increase, I subtracted 27.5 – 20 = 7.5
The mean number of push ups increased by 7.5 from last month to this month
LAST MONTH: THIS MONTH: So the mean of last months
10 10 push up count was about
10 15 16.
15 25
15 30 This months push up
25 30 count was about 28.
25 30
25 40 So the difference is about
35 40 12 push ups.
Samantha B.
Remember, the mean is the average of a set of data…so you should end up with one number as your mean!
the answer is 7.5 because the mean of last month is 20 and for this month it is 27.5 so when you subtract those two you get the answer of 7.5 is how much it increased since last month.
The mean number of pushups increased by 7.5.
How did you find your answer Hailey?
the mean number of pushups increased by 7.5, first I added all the push ups from the first month, which turned out to be 160, then added all the students, so 160 divided by 8 is 20. then I looked at the second month and added them together which was 220, so the total number of students is 8, 220 divided by 8 is 27.5, so the 2 averages subtracted together is 7.5
27.5 – 20 =7.5 pushups
How did you find your answer Skylar?
I found the mean of thr first group by adding all the push ups together that they could do which added up to be 160 total divided by the 8 students which equals 20.
The mean of the second group was 220 total pushups divided by the 8 students which equals 27.5
That shows me that the mean pushuos increased by 7.5
I found the mean of the number of pushups last month and got 20. I then found the mean of pushups from this month and got 27.5. So the number of pushups increased from this month to last month was 7.5.
The number of push-ups increased bye 7.5 because I found the mean by adding every number and then i divided it by the number of the numbers there where. For example in push-up last month I added all the numbers and then I divided them bye 8 and I did the same for the number of push-ups this month and for last month so the mean for the last month was 20 and the mean for the number of push-ups for this month was 27.5.
In the last month the mean was about 23 or 24, while this month the mean is 26, so the mean went up by 2 or 3
How did you find your answer Julian?
The mean number of push-ups increased by 4 from last month to this month. All that I did to figure this out was first find the mean for the first month. To do that first i multiplied 30 times 3=90,15 times 2=30,10times2=20, and 35 times 1=35. I added all of those numbers and it equalled 160. Then i divided 160 into 4 because there was 4 numbers that i added and that equaled 40. Then i had to find the mean for this month. To do that i multiplied 30times3=90, 40times2=80,25times1=25, 15times1=15, and 10times1=10. I added all of those numbers and it equalled 220 then i divided 220 into 5 because there was 5 numbers i added it equaled 44. Lastly to find the answer i subtracted 44 minus 40 =4. So the answer is 4.
Was there only 4 pieces of data on the graph?
His class improved with 7.5 more push-ups in a month. This is how I did my work. I added the first months push up ratings and got 160 then divided it by eight which was the number of students who did it and go 20. I did the same thing on the month after raiting and got 27.5.
Last month’s mean ( 10+15+25+35=85 push-ups divided by 8 , the mean is 10.63. ) This month the mean is ( 10+15+25+30+40=120 push-ups divided by 8 , the mean is 15. So, that means that each student is a able to do 4.37 push ups more than the month before.
The dots on the graph represent the number of kids able to do each number of pushups!
The mean number of push ups increased by 7.5 because you add up all the number of push ups from last month which equals 160 and divide it by how many numbers you have and you which is 8 so 160\8 equals 20 so 20 is your mean from last month then you do this months mean so you add up all the numbers and your total is 220 then you divid it by how many numbers you have so 8 then 220/8 equals 27.5 so thats your mean for this month then you subtract both means from both months and you get 7.5 so the increase from last month and this month is 7.5
The mean number of push-ups increased by 7.5. First I try to find the mean of both months of push-ups then I got 20 for last month and 27.5 for this month. Than I finally subtracted 27.5 – 20 and got 7.5. So the answer is 7.5.
It increased by 7.5 push ups. I got this by doing 10+15+25+90+80 and got 220 so then I divided it by 8 and got 27.5 then I did 20+30+75+35 and got 160 so then I divided it by 8 and got 20. Then I subtracted 27.5 – 20 and got 7.5!
The mean of last month is 20 because I added all the numbers and then I divided the total by 8. The mean of this month’s is 27.5 because I added all the numbers and divided the total by 8. So this tell me that the number of push ups from this month increase by 7.5 from last month’s pushups.
The mean number of pushups increased by 60 from last month to this month.
How did you get that answer Jasmin?
The number of push-ups increased from last month to this month by 7.5.
How I got 7.5 is first I found the mean of last months push-ups by multiplying the number of dots times the number below the dot(s). After that I added the number of dots total. Then I divided the first number and second, then got 20. I did the same thing for the number of push-ups this month and got 27.5. I subtracted 27.5-20 and t got 7.5.
The mean number of push-ups increased by 7.5.
I got my answer by adding the data from each graph and then dividing the answer I got by the number of data there is which was 8. And i got 20. I did the exact same thing to the other graph and I got 27.5. So i just subtract 27.5 by 20 and got 7.5. Thats how I got my answer .
20 27.5
The mean number of push ups increased by 4 from last month to this month. First I added up all the push ups the students did last month. I got 160. Then I divided it by 4 because it was the amount of pushups they did per day. I got 40. Then I added up all the pushups the students did this month. I got 220. Then I divided it by 5 because that is the amount of push ups they did per day. I got 44. 44-40 is 4, so the number of push ups increased by 4.
Did you try finding the mean for each set of data and comparing those?
It increased by 7 1/2 push ups I found my answer by adding up all the posh ups done and divided it by how kids did that many push ups.
the mean number of students that increased there push-ups in the last month to this month would be 9 students because both from last month and this month , there are 8 push-ups for both month so divided by 2 , I’d get 9 students.
Why did you divide by 2 if the were 8 pieces of data?
The mean changes by 7.5. Because the first mean is 20 and the second mean is 27.5. When u 27.5-20=7.5.
The mean number for 30 increased by 2 because two more people could do 30 push ups.
The mean should be an average of ALL the data!
the mean increased by 55 push ups. cause if you add all the push ups from the first month, than add all the push ups from this month, then subtract them, it equals 55
Remember…to find the mean, you add all the values together and then divide by how many values you have!
The mean number of push-ups increased by (7.5) from the last month to this month.
I got this answerer by adding up the numbers and dividing by 8 then comparing the differences.
the number of the kids improving in his class are 6 beuase only 2 kids didnt improve and they stayed at the same number of push ups and the six kids that did improve moved up to a higher amount of number of push ups!!!!:):):):P
How did the mean number of kids improve?
+7 because if you count all of the numbers that increased and not minused you would get 7
This does not make sense Ashleigh!
(+5)
well lets start with ten 2 used to do good until it increased to only 1 the next month.
on 15 there used to be 2 doing good until the next month now only one is doing good.
on 20 nobody did twenty during both months.
on 25 there used to be 3 until there ended up only being on doing 25.
in 30 it has improved a lot beause first month there was none now there is 3.
in 35 it increased because in the first month they hd 1 and now they have zero.
in 40 it im proved because in the first month there was none now there is 2.
45 dident improve they stayed the same both months zero.
How does the mean increase or decrease?
I did it an easier way so I did:
10×2= 20
15×2= +30
25×3= 75
—————–
160 (then. . .)
10= 10
15= 15
25= +25
30×3= 90
40×2= 80
—————
220
then added that up which is 380….thats 15 #’s that added up to that….so then, I got 25.3 continues…The increse would be 60 more push-ups…
the diffrence is 7.5 push-ups
Last month’s total: 160 pushups
This month’s total:220 pushups
so the means are:20 and 20.4! So,…this month has well…MORE!!
THANK YOU FOR YOUR COMUNICATION!
NO ENCORES!!!!!!
The mean increased by 7.5 pushups. To find my i answer first i found the mean of the first month and got 20. Then i found the mean for the second number and got 27.5. Last i subtracted the first and second means and got 7.5 push-ups as my final answerThat how i got my answer Ms.Ellsion.
you get 160 becuse its 8 number nd i added 10 two times and 15 once and 25 three times
lol what does nd mean!
the awnser is 30
The first thing that I did was that I added up last month’s pushup total and I got 160. Then I divided it by 8 because there are 8 students and that’s how I got the mean of 20 pushups. The next thing I did was that I did was I added this month pushup total and I got 220. Then I divided 220 by 8 because there are 8 students and that’s how I got the mean of 27.5 pushups. So the class increased by 7.5 push-ups.
You get 30 because its 8 numbers and i added all of them then divided by 8
The answer is 7.5 pushups first I found the mean of the two sets of numbers then I found the difference between the two answers of the means and my answer was 7.5 pushups.
the mean increased by 5.
the mean increased vy 7.5 because when i added all the numbers in the 1st month i got 160 then i divided 160 by 8 and got 20 then i added all the numbers in the 2nd month and got 220 then i divided by 8 and got 27.5. After i took 27.5 and 20 then i subtracted them together and got a remainder of 7.5.
The mean increased by 7.5 push ups. What I did to get my answer is I found the mean for the first month(20), then I found the mean for last month(27.5). So then I subtracted 27.5 and 20 and got 7.5
the difference between a mean of 20 and a mean of 27.5 is 7.5