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Chapter 1: Q2-16BSC (page 1)

Determine whether the data are from discrete data or continuous data set.

House AttendanceThe Clerk of the U.S. House of Representatives records the number of representatives present at each session.

Short Answer

Expert verified

The number of representatives present in the house for every session comes from a discrete data set.

Step by step solution

01

Given information

The number of representatives is recorded by the clerk for reach session at the U.S. House of Representatives.

02

Discrete and continuous data

  • Discrete data:

Numerical data that assumes only fixed integral values is called discrete data. For example, the number of ice cream flavors, the number of votes received, the number of shelves, etc.

  • Continuous data:

Numerical data that assumes any value within a given range is called continuous data. The values can be measured. For example, the duration of sleep, the length of a wall, the distance between two cities, etc.

03

Classification of data

As the number of representatives is countable and cannot hold a decimal value, they come from adiscrete data set.

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Most popular questions from this chapter

In Exercises 17鈥�20, refer to the sample of body temperatures (degrees Fahrenheit) in the table below. (The body temperatures are from a data set in Appendix B.).

Subject


12345
8 AM9798.597.697.798.7
12 AM97.697.89898.498.4

Conclusion If we analyze the listed body temperatures with suitable methods of statistics, we conclude that when the differences are found between the 8 AM body temperatures and the 12 AM body temperatures, there is a 64% chance that the differences can be explained by random results obtained from populations that have the same 8 AM and 12 AM body temperatures. What should we conclude about the statistical significance of those differences?

Determine whether the sampling method appears to be sound or is flawed.

Nuclear Power Plants. In a survey of 1368 subjects, the following question was posted on the USA Today website: 鈥淚n your view, are nuclear plants safe?鈥� The survey subjects were Internet users who chose to respond to the question posted on the electronic edition of USA Today.

Simple Random Sample vs. Random Sample Refer to the definition of simple random sample on page 27 and its accompanying definition of random sample enclosed within parentheses.

Determine whether each of the following is a simple random sample and a random sample.

  1. A statistics class with 36 students is arranged so that there are 6 rows with 6 students in each row, and the rows are numbered from 1 through 6. A die is rolled and a sample consists of all students in the row corresponding to the outcome of the die.

b. For the same class described in part (a), the 36 student names are written on 36 individual index cards. The cards are shuffled and six names are drawn from the top.

c. For the same class described in part (a), the six youngest students are selected.

Parameter and Statistic In a Harris Interactive survey of 2276 adults in the United States, it was found that 33% of those surveyed never travel using commercial airlines. Identify the population and sample. Is the value of 33% a statistic or a parameter?

Identify whether the given value is a statistic or a parameter.

Triangle Fire Fatalities: A deadly disaster in the United States was the Triangle Shirtwaist Factory Fire in New York City. A population of 146 garment workers died in that fire.
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