5 Number Summary and percentiles

In order to find the median, the data must be sorted from least to greatest first.

• A. True
• B. False

This boxplot has a center value that is the same as .

• average or mean

• Middle value called Q2 or median

• 2

• 8

• 10

What percent of students scored HIGHER THAN 70?

• 25%

• 50%

• 75%

• 0%

Quartiles

are special cases of

percentiles.

Q 1 is the __th ​percentile,

Q2 is the __th ​percentile, and

Q 3 is the __th percentile.

• 25th, 50th, 75th

• 0, 25th, 50th, 100th

• 75th, 50th, 25th

• 3,6,10,12

• 7,2,3,6,10

• 2,3,6,10,12

• 12,10,6,3,2

• 8, 6, 7, 12, 15, 24

• 24, 15, 12, 7,6

• 6, 7, 12, 15, 24

• 12,10,6,3,2

Given the data set: 1, 2, 3, 6, 9, 11, 45, 102, calculate the percentile for the data value 11 in this set.

• 70^th percentile

• 62.5^th percentile

• 72.5^th percentile

• 75^th percentile

What is the percentile of the value 74 in the following group of 15 data values? 23, 30, 35, 55, 61, 65, 68, 69, 70, 74, 80, 85, 90, 100, 100

• 73rd

• 67th

• 75th

• 60th