Interquartile Range Median Mean Mode

What is a the meaning for "median"?

• fair share

• middle

• repeats the most

• variation

What is the mode in this set of numbers:
7, 14, 20, 3, 7, 14, 2, 14, 7

• 7

• 20

• 7 & 14

• none of the above

The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below: 
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?

• 5

• 6

• 9

• 11

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

• True

• False

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 the median of the upper quartile and the median of the lower quartile. Q3 - Q1

What is the IQR of the following Data Set:

32, 35, 35, 36, 39, 40, 44, 48, 49

• Q1: 35

  Q2: 39

  Q3: 46

  IQR: 46 - 35 = 11

• Q1: 35

  Q2: 39

  Q3: 44

  IQR: 44 - 35 = 9

• Q1: 35

  Q2: 39

  Q3: 48

  IQR: 48 - 35 = 13

• Q1: 35

  Q2: 39

  Q3: 46

  IQR: 39 - 35 = 4

What is the IQR of the following Data Set:

1, 3, 4, 5, 5, 7, 9

• Q1: 3

  Q2: 4

  Q3: 6

  IQR: 6 - 3 = 3

• Q1:3.5

  Q2: 5

  Q3: 8

  IQR: 8 - 3.5 = 4.5

• Q1: 3

  Q2: 5

  Q3: 7

  IQR: 7 - 3 = 4

What is the mean of this data set?

41, 44, 90 41, 41

• 257

• 51.4

• 41

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

Find the median of these numbers:

2, 5, 4, 3, 7, 5, 5,

• 4

• 5

• 3

• 6