english tests are compared for two students. sara got 88, 90, 75, 78, 100, 54, 90, 100, 45, and 60 on her…
english tests are compared for two students. sara got 88, 90, 75, 78, 100, 54, 90, 100, 45, and 60 on her english tests. lee got 77, 67, 99, 79, 100, 65, 79, 89, 58, and 67 on his english tests. what is the mean of saras english tests? what is the mean of lees english tests?
Answer
Explanation:
Step1: Calculate sum of Sara's scores
$88 + 90+75 + 78+100+54+90+100+45+60=780$
Step2: Calculate mean of Sara's scores
The number of scores $n = 10$. Mean $\bar{x}=\frac{780}{10}=78$
Step3: Calculate sum of Lee's scores
$77+67 + 99+79+100+65+79+89+58+67=780$
Step4: Calculate mean of Lee's scores
The number of scores $n = 10$. Mean $\bar{x}=\frac{780}{10}=78$
Answer:
Sara's mean: 78 Lee's mean: 78