14 Questions
What is a variable in statistics?
A category with different values
Which type of variable is characterized by values that are categories rather than numbers?
Nominal variable
What does a ratio scale require to be considered as such?
Absolute zero point
What does an interval in a grouped frequency table represent?
Range of values grouped together
What type of statistics focuses on summarizing a group of scores or making them more understandable?
Descriptive statistics
Which type of variable has values that are ranks, like class standing or place finished in a race?
Ordinal variable
What is the term for the range of values in a grouped frequency table that are grouped together?
Interval
Which scale of measurement is characterized by an absolute zero point indicating a complete absence of the variable?
Ratio scale
What is the term for a numeric variable with values that are categories rather than numbers?
Nominal variable
What type of distribution is characterized by having one value clearly having a larger frequency than any other?
Unimodal distribution
In which distribution do the scores pile up on one side of the middle and are spread out on the other side?
Skewed distribution
What term describes a situation where many scores pile up at the low end of a distribution?
Floor effect
Which type of distribution has two approximately equal frequencies, each clearly larger than any of the others?
Bimodal distribution
What does kurtosis measure in terms of a frequency distribution?
Peakedness of the curve
Test your knowledge of basic statistics concepts including descriptive and inferential statistics, variables, values, and scores. Explore the fundamental principles that underlie the analysis and interpretation of data in this quiz.
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