Mean, Median, Mode, Range, IQR and MAD

Front

What is the mean of the following numbers: 5, 10, 15, 20?

Back

Mean = (5 + 10 + 15 + 20) / 4 = 12.5

Front

What is the median of the following numbers: 3, 1, 4, 2?

Back

Median = (2 + 3) / 2 = 2.5 (after sorting: 1, 2, 3, 4)

Front

What is the mode of the following numbers: 2, 3, 4, 4, 5?

Back

Mode = 4 (it appears most frequently)

Front

What is the range of the following numbers: 10, 15, 20, 25?

Back

Range = 25 - 10 = 15

Front

What does IQR stand for?

Back

IQR stands for Interquartile Range.

Front

What is the IQR of the following data set: 1, 3, 5, 7, 9?

Back

IQR = Q3 - Q1 = 9 - 3 = 6

Front

What is the formula for Mean Absolute Deviation (MAD)?

Back

MAD = (Σ|x - mean|) / n, where x is each value and n is the number of values.

Front

What is the mean of the following numbers: 4, 8, 6, 5?

Back

Mean = (4 + 8 + 6 + 5) / 4 = 5.75

Front

What is the median of the following numbers: 7, 9, 3, 5?

Back

Median = (5 + 7) / 2 = 6 (after sorting: 3, 5, 7, 9)

Front

What is the mode of the following numbers: 1, 2, 2, 3, 4, 4?

Back

Mode = 2 and 4 (both appear most frequently)