Question

3. What is the largest possible range of the distribution of group mean class size?

Answer 1

`Range=28.75-22.25\Rightarrow Range=6.5\:students`

Explanation:

1) Retrieving information:

"The number of students 2nd period Math: 32 27 26 23 25 22 30 19"

2) Ordering these numbers:

19 22 23 25 26 27 30 32

3) Calculate the mean of the largest numbers:

`\bar{x}=(32+30+27+26)/(4)=28.75`

Do the same with the smallest ones:

`\bar{x}=(25+23+22+19)/(4)=22.25`

4) Subtract them:

`Range=28.75-22.25\Rightarrow Range=6.5\:students`