Graphs
Measures of Center
Measures of Variation
Level of Measure
100
This word means "count" or "tally" in statistics.
What is frequency.
100
Also known as the average
What is mean
100
Max-Min
What is range.
100

A number with a true zero.

What is ratio level data?

200

This simple graphical display is helpful for summarizing a categorical variable. It shows both the count and the proportion. 

What is a frequency table.

200
Some refer to this measure as the "middle number."
What is median.
200

Captures the middle 50% of values for a numeric variable

What is interquartile range.

200

Rank-ordered groups like: never, sometimes, always

What is ordinal level data?

300

Uses vertical bars that don't touch showing the percentage of cases for each category of the variable.

What is a bar graph

300
No statistic has more occurrences than this value.
What is mode.
300

Marks the three values that divide a data set into four equal parts

What is  quartiles.

300

Categories of data like race: Black/African American, Latino/a, Asian, White, Other

What is nominal?

400

This graph is used to display one continuous variable

What is a histogram

400
An outlier can have a huge effect on this measure.
What is mean.
400

How much a distribution varies from the mean

What is the standard deviation?

400

A number without a true zero, like IQ or SAT score.

What is interval level data?

500

Graph used to display two continuous variables, one of which is a measure of time. 

What is a line graph

500

Where the data tend to fall

What is central tendency

500

Represented by a bell shaped curve with one peak in the middle

What is a normal distribution.

500

When a ratio level variable is changed to be nominal level

What is transforming a variable

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