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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

Provide a reason why the classification of data is important

Days to Maturity for Short-Term Investments. Refer to the days-to-maturity data in Table 2.6 on page 53 . Note that there are 40observations, the smallest and largest of which are 36and 99, respectively. Apply the preceding procedure to choose classes for limit grouping. Use approximately seven classes. Note: If in Step 2 you decide on 10 for the class width and in Step 3 you choose 30 for the lower limit of the first class, then you will get the same classes as used in Example 2.13; otherwise, you will get different classes (which is fine).

We have drawn a smooth curve that represents a distribution,

a. Identify the shape of the distirbution with regard to modality.

b. Identify the shape of the distribution with regard to symmetry (or non symmetry)

c . If the distribution is unimodal and non symmetric, classify it as either right skewed or left skewed.

Give an example, other than those presented in this section, of

a) Qualitative Variable

b) Discrete Qualitative Variable

c) Continuous Quantitative Variable

A variable of a population has a left-skewed distribution.

a. If a large simple random sample is taken from the population, roughly what shape will the distribution of the sample have? Explain your answer.

b. If two simple random samples are taken from the population, would you expect the two sample distributions to have identical shapes? Explain your answer.

c. If two simple random samples are taken from the population, would you expect the two sample distributions to have similar shapes? If so, what shape would that be? Explain your answers.
See all solutions

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