Basic Statistics Interquartile

Find the interquartile range using the following.
Minimum:  1
Q1:  3
Median:  5
Q3:  7
Maximum:  9

• 8
• 4
• 5
• 10

Find the IQR (interquartile range) using the following information.
Minimum:  77
Q1:  79.5
Median:  86.5
Q3:  90.5
Maximum:  99

• 86.5
• 22
• 90.5
• 11

What is the interquartile range of the data set below?

3, 5, 6, 6, 7, 8, 9

• 3

• 6

• 2

• 8

Find the interquartile range using the following data

4, 4, 4, 4, 5, 6, 7, 7, 7

• 3

• 1.5

• 2

• 6

Find the IQR using the following data.

50, 60, 82, 86, 94, 110

• 60

• 84

• 34

• 50

The median is always equal to one of the values in the data set.

• True

• False

The median is the middle value in a set of data

• True

• False

What do quartiles split data up into?

• halves

• thirds

• fourths

• fifths

Which statement about the interquartile range is false?

• It is the difference between the upper and lower quartiles.

• It is the measure of the middle half of the data.

• It is a measure of spread.

• It is a measure of central tendency.

What is the correct definition of the median?

• It is the difference between the highest and lowest values in a data set

• It is the middle value

• It is the most frequently occurring value

• It is the average value