Question

question 4. two classes were given identical quizzes. class a had a mean score of 7.2 and a standard deviation of 1. class b had a mean score of 8 and a standard deviation of 0.7. which class scored better on average? select an answer. which class had more consistent scores? select an answer. question help: video message instructor submit all parts

Explanation:

Step1: Recall concept of mean and consistency

Mean represents average score. Lower standard - deviation implies more consistent scores.

Step2: Analyze mean scores

Class A has mean score of 7.2 and Class B has mean score of 8. Since 8 > 7.2, Class B scored better on average.

Step3: Analyze standard - deviations

Class A has standard deviation of 1 and Class B has standard deviation of 0.7. Since 0.7 < 1, Class B has more consistent scores.

Answer:

Class B scored better on average and had more consistent scores.