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Exam 14: Basic Data Analysis

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Question 41

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If the price of Brand A is transformed to a value of 100 and Brand B's value is 75,indicating its price is 25 percent lower than Brand A's price,100 and 75 represent _____.

A) nominal rankings
B) bivariate statistics
C) p-values
D) index numbers

E) C) and D)
F) B) and D)

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Question 42

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Combining the data from adjacent categories of a Likert-scale item is a common form of data transformation.

A) True
B) False

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Question 43

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The _____ is the number of respondents or observations used as a basis for computing percentages.

Assigning numbers to edited data is known as _____.

A category split means respondents below the observed median go into one category and respondents above the median go into another.

When a third variable inserted into the analysis changes the results when two other variables were studied previously,this third variable is called a moderator variable.

An analysis of the cross-tabulations for each level of a variable as it applies to sub-groups of the sample is known as ______ analysis.

A researcher interested in a data matrix that displays the frequency of some combination of possible responses to multiple variables should construct a _____.

The term p-value stands for power-value.

Which of the following is an alternative to dummy coding using the values of -1 and +1 to represent two categories of responses?

The t-test is most appropriate for small samples (e.g.,smaller than 30).

_____ analysis is the elementary transformation of data in a way that describes the basic characteristics such as central tendency,distribution,and variability.

Which type of statistical analysis test hypotheses involves only one variable?

Index numbers allow researchers to track a variable's value over time and compare a variable with other variables.

All of the following are examples of descriptive statistics EXCEPT _____.

Coding is the process of assigning a numerical score or other character symbol to previously edited data.

The orderly arrangement of data into a table is known as ______.

An analysis of the basic cross-tabulation for each level of a variable not previously considered,such as subgroups of the sample,is referred to as _____.

A contingency table is a data matrix that displays the frequency of some combination of possible responses to multiple variables.

The type of statistical analysis that deals with a hypothesis about a single variable (e.g.market share)is called ______ statistical analysis.