Question

The tables show the number of chin-ups done by students in two different gym classes. 2nd Period 3 4 12 14 7 7 8 4 8 3 11 10 9 8 10 4 8 7 13 9 4th Period 10 3 14 14 16 15 7 12 7 10 12 8 10 9 6 11 9 1 2 5 What conclusion can you draw about the number of chin-ups done by students in the 2nd and 4th period gym classes? Question 4 options: On average, students in the 2nd period did more chin-ups than students in the 4th period. On average, students in the 4th period did more chin-ups than students in the 2nd period. On average, students in the 2nd and 4th periods did about the same number of chin-ups. No conclusion can be made.

Answer 1

Answer: The Correct Answer is : On average, students in the 4th period did more chin-ups than students in the 2nd period

Answer 2

On average, students in the 4th period did more chin-ups than students in the 2nd period

Explanation:

Given the table values as

2nd Period 3 4 12 14 7 7 8 4 8 3 11 10 9 8 10 4 8 7 13 9

4th Period 10 3 14 14 16 15 7 12 7 10 12 8 10 9 6 11 9 1 2 5

Find the average chin-ups done by students in the gym classes

For 2nd Period gym class, the average will be;

=sum of chin-ups ÷ number of students

=sum of chin-ups in 2nd period gym class=

`=3 + 4 +12+ 14+ 7 + 7 + 8+  4 + 8 + 3+  11+  10+  9 +  8 +10+ 4+  8+ 7 + 13+ 9\\\\=159`

=number of students=20

Average=159÷20

=
`(159)/(20) =7.95\\\\\\=8`

For 4th Period gym class

Sum of chin-ups=

`=10+ 3+ 14+ 14 +16 +15+ 7 +12 +7+ 10+ 12 +8+ 10+ 9+ 6+ 11+ 9 +1 +2 +5\\\\\\=181`

Number of students=20

Average number of chin-ups in the 4th period gym class

`=(181)/(20) =9.05\\\\\\=9`

Average number of chin-ups in 2nd Period Class = 8

Average number of chin-ups in 4th Period Class= 9

Conclusion; On average students in the 4th period gym class made more chin-ups (9) than those in 2nd period gym class (8).