Exam 15: Chi-Square Applications

A survey of the opinions of property owners about a street widening project was taken to determine whether the resulting opinion was related to the distance of front footage.A randomly selected sample of 100 property owners was contacted and the results are shown below. What is the null hypothesis? _____________________________________

(Short Answer)

4.8/5

(85)

Question 41

There is not one,but a family of chi-square distributions.There is a chi-square distribution for 1 degree of freedom,another for 2 degrees of freedom,another for 3 degrees of freedom,and so on.

(True/False)

4.8/5

(76)

Question 42

As the degrees of freedom increase,the shape of a chi-square distribution approaches _________________________.

(Short Answer)

4.8/5

(76)

Question 43

When determining how well an observed set of frequencies fit an expected set of frequencies the test is a

(Multiple Choice)

5.0/5

(84)

Question 44

If there are more than two cells,chi-square should not be applied if more than 50 percent of the expected frequency cells have expected frequencies of less than ten.

(True/False)

4.9/5

(92)

Question 45

A recent study of the relationship between social activity and education showed the following results. What is the value of the test statistic?

(Multiple Choice)

5.0/5

(86)

Question 46

Which of the following assumptions is necessary to apply a nonparametric test of hypothesis using the chi-square distribution?

(Multiple Choice)

4.8/5

(82)

Question 47

In a goodness-of-fit test,the sum of the expected frequencies must equal the sum of the observed frequencies.

(True/False)

4.8/5

(87)

Question 48

What is the shape of the chi-square distribution? ___________________

(Short Answer)

4.8/5

(74)

Question 49

Which of the following are correct statements regarding the goodness-of-fit test?

(Multiple Choice)

4.7/5

(91)

Question 50

What statistical test is used to determine how well an observed set of data fits an expected set of data? ________________________________

(Short Answer)

4.9/5

(81)

Question 51

A survey of the opinions of property owners about a street widening project was taken to determine whether the resulting opinion was related to the distance of front footage.A randomly selected sample of 100 property owners was contacted and the results are shown below. What is the expected frequency for people who are in favor of the project and have less than 45 feet of property foot-frontage?

(Multiple Choice)

5.0/5

(76)

Question 52

The educational level and the social activity of a sample of executives follow. What does the expected frequency for the "above average" social activity and "high school" education equal?

(Multiple Choice)

4.9/5

(81)

Question 53

The following table shows the adjustment to civilian life and place of residence. What is the critical value for this contingency table at the 0.01 level of significance?

(Multiple Choice)

4.9/5

(91)

Question 54

Which of the following are correct statements regarding the chi-square distribution?

(Multiple Choice)

4.8/5

(62)

Question 55

The chi-square distribution becomes more symmetrical as

(Multiple Choice)

4.9/5

(83)

Question 56

A survey of the opinions of property owners about a street widening project was taken to determine whether the resulting opinion was related to the distance of front footage.A randomly selected sample of 100 property owners was contacted and the results are shown below. What is the alternative hypothesis? ________________________________

(Short Answer)

4.8/5

(81)

Question 57

The computed chi-square value is positive because the difference between the observed and expected frequencies is

(Multiple Choice)

4.8/5

(84)

Question 58

Tests of hypotheses for nominal or ordinal levels of measurement are called nonparametric or distribution-free tests.

(True/False)

4.8/5

(79)

Question 59

The following table classifies an individual in two ways-by gender and by educational choice. What is this two-way classification called?

(Multiple Choice)

4.7/5

(81)

Question 60

Showing 41 - 60 of 101

There is not one,but a family of chi-square distributions.There is a chi-square distribution for 1 degree of freedom,another for 2 degrees of freedom,another for 3 degrees of freedom,and so on.

As the degrees of freedom increase,the shape of a chi-square distribution approaches _________________________.

When determining how well an observed set of frequencies fit an expected set of frequencies the test is a

If there are more than two cells,chi-square should not be applied if more than 50 percent of the expected frequency cells have expected frequencies of less than ten.

A recent study of the relationship between social activity and education showed the following results. What is the value of the test statistic?

Which of the following assumptions is necessary to apply a nonparametric test of hypothesis using the chi-square distribution?

In a goodness-of-fit test,the sum of the expected frequencies must equal the sum of the observed frequencies.

What is the shape of the chi-square distribution? ___________________

Which of the following are correct statements regarding the goodness-of-fit test?

What statistical test is used to determine how well an observed set of data fits an expected set of data? ________________________________

The educational level and the social activity of a sample of executives follow. What does the expected frequency for the "above average" social activity and "high school" education equal?

The following table shows the adjustment to civilian life and place of residence. What is the critical value for this contingency table at the 0.01 level of significance?

Which of the following are correct statements regarding the chi-square distribution?

The chi-square distribution becomes more symmetrical as

The computed chi-square value is positive because the difference between the observed and expected frequencies is

Tests of hypotheses for nominal or ordinal levels of measurement are called nonparametric or distribution-free tests.

The following table classifies an individual in two ways-by gender and by educational choice. What is this two-way classification called?

What Is Statistics

Describing Data: Frequency Distributions and Graphic Presentations

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Filters