#### In the data set below, what is the lower quartile?

16, 24, 30, 34, 50, 64, 66, 66, 80, 99

Anonymous

0

16, 24, 30, 34, 50, 64, 66, 66, 80, 99

Krishna

0

Step 1: Recall the definition of quartile

DEFINITION: Quartile is median.

Two types: 1) Upper quartile

2) Lower quartile

Upper quartile:

The upper quartile is the median of the higher half of the data.

Lower quartile:

The lower quartile is the median of the lower half of the data.

Step 2: Arrange the numbers from least to greatest.

16, 24, 30, 34, 50, 64, 66, 66, 80, 99 (least to greatest)

Step 3: Separate the numbers into a lower half and an upper half.

16, 24, 30, 34, 50, 64, 66, 66, 80, 99

Lower half: 16, 24, 30, 34, 50

Upper half: 64, 66, 66, 80, 99

Step 4: Find the lower quartile in the lower half

lower quartile in the middle of the lower half.

** ** 16, 24, 30, 34, 50

The lower quartile is 30.