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Graphs
Measures of Center
Research Designs
Random
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

This type of survey method is used for many of the largest studies conducted by CDC


What is repeated cross-sectional survey?

Textbook 9.4 (pg. 238)

100

Organizes, summarizes and displays data

What are descriptive statistics

100

A number with a true zero.

What is ratio level data?

200

This simple graphical display is a list with two columns.

What is a frequency table?

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

This type of research design follows the same participants forward in time. 

What is longitudinal study?

Textbook 9.4 (pg. 238)

200

This type of question forces respondents to select answers that do not truly express their status or opinions. 

What is a closed ended question?

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

This type of sampling method is done when probability sampling is not available?

What is non-probability sampling? 

300

This hypothesis states that there is no relationship between the variables

What is the null hypothesis

300

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

What is nominal?

400

Graph of single points rather than bars.

What is a line graph?

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

This study type measures individuals randomly sampled from the same populations at different points 

What is a cohort study approach?

400

Chi-square, t-test, ANOVA, correlation

What are statistical tests

400

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

What is interval level data?

500

This type of variables is it not possible to create a histogram.


What is a nominal variable?

500

Where the data tend to fall

What is central tendency

500

This study type is used to identify the possible risk factors of disease.

What is case control?

500

Selection bias and testing effect are threats to what type of validity?

What is a internal validity?

500

This procedure changes describes the process in which a nominal variable can be converted to an ordinal variable.

What is transforming variable levels of measure?