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Chapter 2: Q. 4 (page 88)

What is the relationship between a frequency or relative frequency distribution of a quantitative data set and that of a qualitative data set?

Short Answer

Expert verified

The frequency distribution shows the frequency of all conceivable values.

The relative frequency distribution shows the relative frequency of all conceivable values.

Step by step solution

01

Concept introduction

The quantity of one variable in algebraic equations is typically reliant on the position of another. If the data tuple isn't declared precisely, the variable's beginning value reflects the default value.

02

Explanation

The couple of times a result occurred dividing by the amount of times the investigation is performed is called "relative frequency."

The classes in qualitative data are always the various single values that the variable can have. It's probable that we'll need to employ classes instead of single data for a quantitative data set.

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Most popular questions from this chapter

Gas Mileage. The gas mileages, are rounded to the nearest number of miles per gallon, of all new car models.

Explain the meaning of

Qualitative Variable

Discrete, Quantitative Variable

Continuous, Quantitative Variable

A quantitative data set has been grouped by using limit grouping with equal-width classes. The lower and upper limits of the first class are 3and 8, respectively, and the class width is 6.

a. What is the class mark of the second class?

b. What are the lower and upper limits of the third class?

c. Which class would contain an observation of 23?

Class Project: Number of Siblings. This exercise is a class project and works best in relatively large classes.

a. Determine the number of siblings for each student in the class.

b. Obtain a relative-frequency histogram for the number of siblings. Use single-value grouping.

c. Obtain a simple random sample of about one-third of the students in the class.

d. Find the number of siblings for each student in the sample.

e. Obtain a relative-frequency histogram for the number of siblings for the sample. Use single-value grouping.

f. Repeat parts (c)-(e) three more times.

g. Compare the histograms for the samples to each other and to that for the entire population. Relate your observations to key Fact 2.1

Explain the difference between a frequency histogram and a relative-frequency histogram.
See all solutions

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