Biostatistics & Research · single question
In a set of exam scores — what is the MEAN and what is the MODE?
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Correct answer: A. Mean = average (sum ÷ count); Mode = most frequently occurring value
✓ A) Mean = average (sum of all values ÷ number of subjects); Mode = most frequently occurring value.
Statistical measures: MEAN = arithmetic average; MEDIAN = middle value when ordered; MODE = most frequent value; RANGE = largest minus smallest. In a NORMAL distribution: mean = median = mode. Skewed distributions: mean is pulled toward the tail; median is more robust. Boards love asking: 'Given scores 64, 56, 48, 66, 66 — what is median and mean?' Answer: sorted = 48,56,64,66,66 → Median=64; Mean = 300/5 = 60.
Statistical measures: MEAN = arithmetic average; MEDIAN = middle value when ordered; MODE = most frequent value; RANGE = largest minus smallest. In a NORMAL distribution: mean = median = mode. Skewed distributions: mean is pulled toward the tail; median is more robust. Boards love asking: 'Given scores 64, 56, 48, 66, 66 — what is median and mean?' Answer: sorted = 48,56,64,66,66 → Median=64; Mean = 300/5 = 60.
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