Practice Question

1.Define the term percentile. 

A percentile is a term that is used to describe the percentage of data values that fall at or below another data value.

2. Use the following data series to answer 

55, 25, 65, 15, 35, 45, 75

2a. Place the number series in numerical order, smallest to biggest

15, 25, 35, 45, 55, 65, 75

2b. The 25th percentile is……..

25th percentile = 25

2c. The 50th percentile is……..

50th percentile = 45

2d. The 75th percentile is………

75th percentile = 65