Asked by Arjan Thouli on Jun 15, 2024
Verified
The mean for Mr.Foster's Financial Algebra test was 70,and the standard deviation was 4.2.Ms.Helmer's mean for her test was 35,and the standard deviation was 5.7.Two friends were arguing about which did better on the test.Becky got a 78 on Mr.Foster's test,whereas Erin got a 45 on Ms.Helmer's test.Help settle the argument.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values, indicating how much the values deviate from the mean.
- Evaluate and determine metrics of spread.
- Compute z-scores by employing the mean and standard deviation.
Verified Answer
FB
farida begum nizamJun 18, 2024
Final Answer :
Becky's z-score was higher than Erin's,meaning she scored higher than 97.13% of the students taking the same test as her,whereas Erin scored higher than 95.54% of the students taking the same test that she did.
Learning Objectives
- Evaluate and determine metrics of spread.
- Compute z-scores by employing the mean and standard deviation.