Intro to Stats Chapter 2 Test

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

• symmetric, with outliers
• symmetric, with no outliers
• skewed to the left
• skewed to the right 

First step for finding the median is to order the numbers from least to greatest?

• True

• False

Quartiles break the data set into _____ equal parts each representing 25% of the data.

• 1

• 2

• 3

• 4

What is the branch of mathematics dealing with the collection, analysis, interpretation, presentation, and organization of data?

• Statistics

• Algebra

• Geometry

• Calculus

Q2 is the same as the ______

• Mean

• Median

• Mode

• Range

What is the RANGE of the following data set? 4, 5, 6, 8, 9, 10, 11

• 5

• 6

• 7

• 8

What is the Q1, Q2, and Q3 of the following data set?

4, 5, 6, 8, 9, 10, 11

• Q1: 4

  Q2: 8

  Q3: 11

• Q1: 5

  Q2: 8

  Q3: 10

• Q1: 4

  Q2: 5

  Q3: 6

What is the IQR of the following data set:

• 5

• 6

• 7

• There is not enough information

What type of shape distribution would you say this graph has?

• Right Skewed

• Approximately Symmetrical

• Left Skewed

• No skew