Multiple Choice
In a distribution, the frequency of a class is replaced with a proportion or percent.
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2. Describing Data with Tables and Graphs
Frequency Distributions
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In a frequency distribution for a numerical variable, intervals are:
A
Categories based on qualitative characteristics
B
Ranges of values that group the data into classes
C
Individual data points listed in order
D
The total number of observations in the dataset
Verified step by step guidance1
Understand the concept of a frequency distribution: it is a way to organize data by grouping values into intervals or classes and then counting how many data points fall into each group.
Recognize that intervals in a frequency distribution refer to the ranges of values that define each class or group, not categories based on qualitative characteristics or individual data points.
Recall that qualitative characteristics relate to categorical data, which is different from numerical data that uses intervals to group values.
Note that individual data points listed in order describe an ordered list or raw data, not intervals in a frequency distribution.
Conclude that intervals in a frequency distribution are best described as ranges of values that group the data into classes.
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