Distributions of Data

Describe the center and spread of the data using either the mean and standard deviation or the five-number summary.

• Skewed so use the Mean and Standard Deviation.

  Mean: 50.5

  Standard Deviation: 12.5

• Symmetric so use the Mean and Standard Deviation.

  Mean: 50.5

  Standard Deviation: 12.5

• Symmetric so use the Five Number Summary.

  Minimum: 25

  Quartile 1: 45

  Median: 50

  Quartile 3: 57.5

  Maximum: 76

• Skewed so use the Five Number Summary.

  Minimum: 25

  Quartile 1: 45

  Median: 50

  Quartile 3: 57.5

  Maximum: 76

The data for the latest test is shown in this graph. Select the true statement.

• The data has a gap a 74 and 76

• The data is symmetrical

• The data is skewed right

• The data is skewed left

What value is the lower quartile?

• 66

• 58

• 60

• 64

Which box and whisker plot has the highest median?

• Top plot

• Bottom plot

What is the mode?

• 88%

• 89%

• 97%

• 91%

What is the range of the data shown?

• 85

• 90

• 80

• 70

Which statement best describes this graph?

• There is a peak at 2.

• There is a gap in the data.

• Most people own 1 pet.

• There is no mode.

Each dot represents 1 day. How many days were recorded?

• 9

• 21

• 20

• 105

Which is the correct data set for the dot plot?

• 1, 2, 3, 4, 5, 6, 7, 8, 9, 

• 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 7, 9

• 1, 2, 3, 4, 5, 7, 9

• Negatively Skewed

• Symmetric

• Positively Skewed

• Uniform