Data Analysis Math

Find the median:

5, 6, 8, 7, 9, 5, 2

Find the mean:

52, 41, 75, 89, 73, 66, 47, 95

Find the range:

51, 42, 65, 41, 50, 63, 68, 81, 82, 52

Find the median:

15, 13, 16, 21, 23, 6, 4, 9, 11, 8

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number

• Add the two numbers in the middle & then divide by two.

• They are both the median

• None of the above

Which of the following best describes the process of finding the interquartile range for a set of data?

• Add the biggest and smallest numbers.

• Place the numbers in order from least to greatest and find the middle.

• Find the difference between the maximum and the minimum.

• Subtract Q1 from Q3.

Which of the following lists all the five numbers needed to make a box plot?

• Mean, Median, Mode, Range, and Total

• Minimum, Quartile 1, Median, Quartile 3, and Maximum

• Smallest, Q1, Q2, Q3, and Q4

• Minimum, Maximum, Range, Mean, and Median

In order to find the median, the very first thing you must do is to..

• find the difference between biggest and the smallest number.

• find the middle number

• list the numbers in order

• find the most repeated number

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

• Upper Quartile

• Lower Quartile

• Median

• Minimum

Determine the IQR for this set of data. 12, 13, 14, 15, 17, 18, 19, 19, 22, 23