Measures of Position

What is the term for the median of the lower half of the data?

• Lower Quartile (Q1)

• Upper Quartile (Q3)

• Median (Q2)

• Maximum

What is the term for the median of the upper half of the data?

• Upper Quartile (Q1)

• Lower Quartile (Q3)

• Median (Q2)

• Minimum

Identify the median for the given data?
23, 34, 27, 7, 30, 26, 28, 31, 34

• 28
• 23
• 31
• 34

What is the Q1 of this data set?
6, 7, 2, 1, 5, 2, 1, 6

• 1
• 1.5
• 2
• 2.5

What is the Q3 of this data set?
6, 7, 2, 1, 5, 2, 1, 6

• 5
• 6
• 5.5
• 6.5

What is the IQR for 3, 6, 7, 12, 15, 18, 21

• 12

• 100

• 6

• 15

33, 25, 42, 25, 31, 37, 46, 29, 38

What is the third quartile (Upper Quartile) of the data using Mendenhall and Sincich method?

• 37

• 38

• 40

• 46

Jenny scored at the 99th percentile on a test. How should be interpret this information?

• Jenny scored better than 99% of people who took this test
• Jenny scored worse than 99% of people who took this test
• Jenny got 99% of the questions on the test right
• Jenny got 99% of questions on the test wrong

• 6

• 8

• 9

• none of these

This fractile divides the set into 4 equal parts.

• Median

• Quartile

• Quantile

• Decile

• Percentile