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Chapter 1: Q.64 (page 54)

Use the following information to answer the next two exercises: A study was done to determine the age, number of times per week, and the duration (amount of time) of resident use of a local park in San Jose. The first house in the neighborhood around the park was selected randomly and then every 8th house in the neighborhood around the park was interviewed.

“Duration (amount of time)” is what type of data?

a. qualitative

b. quantitative discrete

c. quantitative continuous

Short Answer

Expert verified

Amount of time is quantitative continuous variable

Example: 10 hours, 10.5 hours ( 10 hours and 30 minutes)

Step by step solution

01

To determine

The type of data.

02

Explanation

When a variable can be expressed in numbers, it is considered quantitative. We believe time to be quantitative since it may be stated numerically. If a variable can be stated in both whole numbers and decimals, it is considered continuous. We regard time to be a continuous variable because we may express it in decimals as well. As a result, the duration of time is a quantitative continuous variable.

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Most popular questions from this chapter

For the following exercises, identify the type of data that would be used to describe a response (quantitative discrete, quantitative continuous, or qualitative), and give an example of the data. brand of toothpaste

Is a sample size of two representative of a population of five?

1.13A local radio station has a fan base of 20,000listeners. The station wants to know if its audience would prefer

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The station uses convenience sampling and surveys the first 200people they meet at one of the station’s music concert events. 24people said they’d prefer more talk shows, and 176 people said they’d prefer more music.

Do you think that this sample is representative of (or is characteristic of) the entire 20,000listener population?

Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once they start the treatment. Two researchers each follow a different set of 40 patients with AIDS from the start of treatment until their deaths. The following data (in months) are collected.

Researcher A:

3; 4; 11; 15; 16; 17; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29; 35; 44; 13; 21; 22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 18; 47; 33; 34

Researcher B:

3; 14; 11; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35; 44; 23; 21; 21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29

Determine what the key terms refer to in the example for Researcher A.

parameter

Describe the unethical behavior, if any, in each example and describe how it could impact the reliability of the resulting data. Explain how the problem should be corrected. A study is commissioned to determine the favorite brand of fruit juice among teens in California.

  1. The survey is commissioned by the seller of a popular brand of apple juice.
  2. There are only two types of juice included in the study: apple juice and cranberry juice.
  3. Researchers allow participants to see the brand of juice as samples are poured for a taste test.
  4. Twenty-five percent of participants prefer Brand X, 33% prefer Brand Y and 42% have no preference between the two brands. Brand X references the study in a commercial saying "Most teens like Brand X as much as or more than Brand Y."
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