Basic statistics

What is the mean of the data 10, 20, 30, 40?

• 1 20
• 2 100
• 3 30
• 4 25

The median of 2, 4, 6, 8 is:

• 1 6
• 2 4
• 3 5
• 4 20

The most frequent value in a data set is the:

• 1 Mode
• 2 Median
• 3 Mean
• 4 Range

The standard deviation measures:

• 1 The mode
• 2 Spread of the data
• 3 The mean only
• 4 The total

The variance is:

• 1 The range squared
• 2 The same as the mode
• 3 The square root of the mean
• 4 The square of the standard deviation

The mean of 12, 14, 16, 18, 20 is:

• 1 14
• 2 16
• 3 15
• 4 80

The range of 4, 9, 2, 15 is:

• 1 13
• 2 11
• 3 15
• 4 2

A data set has standard deviation 0. All the values are:

• 1 Zero
• 2 Equal
• 3 Different
• 4 Negative

Frequency is the:

• 1 Mean
• 2 Largest value
• 3 Number of times a value occurs
• 4 Total