Mean median mode of test scores flashcards

What is the mean of scores 80, 90, 70?

Mean = (80 + 90 + 70) / 3 = 80.

Median of 70, 80, 90, 85?

Median = (80 + 85) / 2 = 82.5.

Mode of 85, 90, 85, 70?

Mode = 85 (most frequent score).

True or false: Mean always equals median.

False, because they can differ based on data distribution.

Difference between mean and median?

Mean is the average; median is the middle value in sorted data.

Fill in the blank: Mode is the score that occurs _____.

most frequently.

What is the mean of 60, 70, 80, 90?

Mean = (60 + 70 + 80 + 90) / 4 = 75.

Find the median: 55, 65, 75, 85, 95.

Median = 75 (middle value).

True or false: Mode can be more than one number.

True, if multiple numbers appear with the same highest frequency.

If scores are 90, 90, 100, what is mode?

Mode = 90.

Calculate mean for scores: 100, 100, 80, 70.

Mean = (100 + 100 + 80 + 70) / 4 = 87.5.

True or false: Median is affected by extreme values.

False, it's resistant to outliers.

Find mode: 50, 50, 60, 70, 80, 80.

Mode = 50 and 80 (bimodal).

Difference between mode and median?

Mode = most common; median = middle value in ordered data.

What is the median of 45, 55, 65, 75?

Median = (55 + 65) / 2 = 60.