MATH 7: STAT&PROB MODULE 2

These are summary numbers that represent a single value in a distribution of scores (Vogt, 2005)

• Frequency Distribution Table

• Measures of Tendency

• Measures of Variabilty

• Measures of Dispersion

Most reliable measure of Central Tendecy

• Mean

• Median

• Mode

• Variance

It is the most appropriate to use when there are extreme or deviant values

• Mean

• Median

• Mode

• Variance

It is the inspection of the average

• Mean

• Median

• Mode

• Variance

It is used when the data are ordinal

• Mean

• Median

• Mode

• Variance

The mean of 5, 7, 11, 20, and 18 is

• 12.6

• 12.5

• 12.2

• 12.4

The weighted mean of the numbers 12, 15, 16, 12, 15, 18, 18, 20, 12, and 18 is

• 15.5

• 15.7

• 15.8

• 15.6

The median of 4, 6, 9, 10, 12, 15, 17, 20, 28

• 10

• 11

• 12

• 13

The median of 4, 8, 10, 14, 18, 19, 23, 24

• 15

• 16

• 17

• 18

The mode of 12, 29, 35, 36, 36, 45, 45, 45, 50, 53

• 36

• 50

• 53

• 45