Data Sets and Distributions

the difference between the greatest and least value in a set of data

• Mode

• Range

• Median

• Mean

has data values that are words (usually) instead of numbers

• Categorical Data

• Numerical Data

• Quartile

• Statistical Question

a graphical display that shows frequency or the number of times a value occurs

• Box Plot

• Histogram

• Dot Plot

• Data Set

Which statement is best supported by the box plot?

• The mean of the data is 85.

• There were 98 students included in the data.

• The median of the data is 85.

• Half of the students scored between 68 and 94.

Which best describes the mean of a data set?

• The average, and the "fair share" of your data points

• The most common value in the data set

• The middle value in a data set when your values are ordered

• The difference between the maximum and minimum

What is the median of the data set:

0, 0, 3, 4, 5

• 0

• 5

• 3

• 2.4

A description that shows data spread out to the left or right

• Variablility

• Spread

• Skew

• Distribution

The measure of how far the numbers in a data set are away from the mean or the median

• Variablility

• Spread

• Skew

• Distribution

Numbers that are much greater or much less than the other numbers in the set

• Spread

• Quartile

• Outlier

• Range

What is the range?

• the middle number of the set of data

• when you add the data together and divide by the number of values - find the average

• the value that occurs the most often

• the largest number minus the smallest number

• quartile 3 minus quartile 1