Transforming Statistics Data

What is the median?

• 62

• 58

• 66

• 60

What is the range of the set of data?

• 70

• 65

• 80

• 55

Another word for average is

• sample 

• mean

• data

• numerical data

A bar graph used to display data grouped into intervals.

• bar graph

• line graph

• stem and leaf plot

• histogram

The distribution of this data set can best be described as...

• Right-skewed

• Left-skewed

• Symmetrical

• Purple

Answer explanation

The tail is on the right, so it is right-skewed.

If 10 is added to every value in a set of data, what will happen to the value of the mean?

• it will increase by 10

• it will decrease by 10

• it will stay the same

• it will both increase and decrease

• 15, 25, 35, 45, 55, 115

• Skewed Right

• 15, 25, 35, 45, 55, 65

• Skewed Left

• 15, 75, 85, 95, 105, 115

• Symmetrical

Sally was so excited after collecting her data that she slipped and fell in the mud! She can no longer read her data but she knows the median is 35.4 inches with a range of 12 inches. Sally also realizes that she needs to add 1 inch to all her measurements because of a faulty ruler, then convert everything to feet. What would her median and range be after making these adjustments?

• Median = 3.033 feet
  Range = 1.083 feet

• Median = 3.033 feet
  Range = 1 foot

• Median = 2.95 feet
  Range = 1.083 feet

• Median = 2.95 feet
  Range = 1 foot

When MOST of the data is clustered near the LESSER values, the data is considered to be

• Skewed Right

• Skewed Left

• Skewed High

• Skewed Low

What is the distribution of the data?

• skewed right

• skewed left

• symmetric

• stairsteps