Review for Quartile

The score points which divide a distribution into four equal parts.

• Quartiles

• Deciles

• Median

• Percentiles

It stands the value under which 25% of data points are found when they are arranged in increasing order.

• Quartile 4

• Quartile 3

• Quartile 2

• Quartile 1

It is the quartile that falls below the 50% of the data and also known as median.

• Quartile 1

• Quartile 2

• Quartile 3

• Quartile 4

It is the value under which 75% of data points are found when arranged in increasing order.

• First Quartile

• Second Quartile

• Third quartile

• Fourth Quartile

What is the formula of getting the value of quartiles for ungrouped data.

Arrange the following given data of scores

25, 15, 10, 30, 25

• 10, 15, 25, 25, 30

• 30, 25, 10, 15, 25

• 25, 15, 10, 30, 25

• 25, 30, 10, 15, 25

What is the mean or average of the scores given below.

10, 15, 25, 25, 30

• 31

• 41

• 21

• 11

What is the median of the following scores?

10, 15, 15, 25, 30

• 10

• 15

• 25

• 30

In the scores 10, 15, 15, 25, 30 what is the value of mode?

• 10

• 15

• 25

• 30

Complete the three measures of central tendency below

MEAN, MEDIAN, ____

• lower median

• higher median

• interquartile range

• mode