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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.

鈥淒uration (amount of time)鈥� 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

Use the following information to answer the next seven exercises: 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 starting the treatment. Two researchers each follow a different set of 40 AIDS patients 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

Can you tell if one researcher is correct and the other one is incorrect? Why?

Use the following data to answer the next five exercises: Two researchers are gathering data on hours of video games played by school-aged children and young adults. They each randomly sample different groups of 150 students from the same school. They collect the following data.

Would the sample size be large enough if the population is school-aged children and young adults in the United States?

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The data he collects are summarized in the histogram. The class boundaries are 10 to less than 13, 13 to less than 16,

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