Blatchley Chapter 14 Quiz

Quiz Content

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. Who devised the chi-square test, and why was it created?

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Which of the following made Galton's survey data difficult to analyze with other techniques that are not like the chi-square test?

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. Which of the following does not represent a distinction between a parametric and nonparametric test?

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. Nonparametric tests and parametric tests are both used to analyze data. But in what regard do they differ?

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. Which of the following is true, regarding the analysis process of nonparametric tests?

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. What is the expected frequency of rolling a 1 or 3 on a fair six-faced die?

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. When using a chi-square goodness of fit, what does a significant result suggest?

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. When the expected values and observed values in a chi-square goodness of fit tests match very well...

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Use the information below to answer the next five questions.

A casino owner feels that one of the die that is be used is not fair. He rolled the die 600 times. Below are the data for the number of times each face showed up:

1: 105

2: 97

3: 112

4: 92

5: 93

6: 101

With no other information, what should the expected frequency be for each number to be rolled?

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. There are how many degrees of freedom for this chi-square goodness of fit test?

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. What is the chi-square value?

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. What is the critical value at .05 level, and what is the conclusion?

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. How do you interpret a chi-square test for independence?

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Below are the data that was collected. Use it to answer the next four questions.

A researcher is examining snack preferences. Do young children’s snack preference dependent on their gender?

Apples Cookies
Boys 15 89
Girls 8 77

If the null hypothesis of this test is rejected, which of the following is true?

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. How many degrees of freedom are in this test?

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. The critical value for this test at alpha = .05 is ____. The observed test statistic is ____.

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. What is the appropriate conclusion, for this test?

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Using the data he collected, answer the next three questions.

Do apple and android mobile phone user use different mobile apps for social networking?

Apple Android
Facebook 112 64
Snapchat 29 89
Instagram 78 103

The null hypothesis for this chi-square test would be...

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. How many degrees of freedom are there for this chi-square test?

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. Calculate the chi-square. Which is the appropriate description of the result at alpha = .05?

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. When conducting a chi-square test, as the number of degrees of freedom __________, the critical value ____________.

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. Which of the following best describes the controversy related to Likert scales in your text?

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. Why is it important to consider what measurement scale a Likert scale represents?

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. Jeremy decides that he is using a t-test to compares emotional responses measured on a Likert scale between two conditions what does this suggest?

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. Why is there controversy over how to analyze data from Likert scales?

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