A test given to a group of 30 students has a mean of 24 and a ...

[cagreen833]

A test given to a group of 30 students has a mean of 24 and a standard deviation of 3 . A second test given to the same group of students also had a mean of 24 but had a standard deviation of 4 . Based on this information, which of the following is the most valid conclusion.
 
  a. The students performed better on the second test, since the standard deviation is higher.
  b. The average on the second test is higher than on the first test.
  c. The median on the second test is higher than on the first test.
  d. The students' scores on the second test spread out more than they did on the first test.

Question 2

How did Sandra's comment in the last paragraph (paragraph 11) illustrate one of the guidelines for preparing effective rules?
 
  What will be an ideal response?

[joanwhite]

Answer to Question 1

d

Answer to Question 2

This indicates that she provides rationales for her rules.

[cagreen833]

Wow, this really help

[Liamb2179]

Gracias!