Answer:
Saras Mean on her reading test is 78
Lee's Mean on his reading test is 79
Step-by-step explanation:
You add grades for Sara's test together and then you will divide by the= number of graded test there were and you will get 78.
You add Lee's Grades for the test together and divide by the number of graded test there were and you will get 79.
A mean is an arithmetic average of a set of observations. Sara's mean score is 78, while Lee's mean score is 79.
A mean is an arithmetic average of a set of observations. it is given by the formula,
Mean = (Sum of observations)/Number of observations
Given the reading score of Sara are 98, 100, 65, 78, 98, 46, 100, 100, 45, and 50. Therefore, the mean will be,
Mean= (Sum of observations)/Number of observations
Mean = (98+100+65+78+98+46+100+100+45+50)/10
Mean = 780/10
Mean = 78
Given the reading score of Lee are 97, 67, 89, 99, 100, 45, 79, 89, 58, and 67. Therefore, the mean will be,
Mean= (Sum of observations)/Number of observations
Mean = (97+67+89+99+100+45+79+89+58+67)/10
Mean = 790/10
Mean = 79
Hence, Sara's mean score is 78, while Lee's mean score is 79.
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