Sarfaraz scored 76, 65, 82, 67, and 85 out of 100 in English, Math, Physics, Chemistry, and Biology. What is his mean score?
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Answer: D. None of these
Explanation
Calculating the arithmetic mean requires summing all individual test scores and dividing by the count of subjects. Summing seventy six, sixty five, eighty two, sixty seven, and eighty five gives a total score of three seventy five. Dividing three seventy five by five subjects results in a mean score of seventy five, which is not listed. The arithmetic mean is a measure of central tendency calculated by dividing the sum of values by the sample count. Standard academic grading evaluates overall student performance by computing unweighted average percentage scores. Checking calculated results against available multiple choice options ensures accuracy in test question responses.
Option A is too low and does not match the computed average of the student five test scores. Option B underestimates the true arithmetic mean by miscalculating the sum of the input values. Option C is lower than the actual calculated mean score of seventy five derived from the dataset.
- Subject
- Mathematics
- Category
- Mathematics
- Topic
- —
- Difficulty
- medium
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