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When comparing the independent samples t-test for means and the paired sample t-test for means, one t-test
A. measures from separate groups while the other is for measures from the same group.
B. continuous variables while the other is for categorical variables.
C. small sample sizes while the other is for large sample sizes.
D. univariate analysis while the other is for multivariate analysis
A brand product manager needs to know if men and women hold different attitudes about a product. What test should the brand product manager use?
Cross-tabulation
Paired sample
t
-test for means
Independent samples
Pearson chi-square test of independence
The level of significance chosen for an appropriate level of error related to the probability of rejecting a null hypothesis is usually set at what value?
0.20
0.10
0.05
0.50
Which of the following strategies for handling missing data makes maximum use of the data?
Eliminating questionnaires with missing data
Eliminating the case with the missing data in analyses using the variable(s) for which data is missing
Reporting the number of blanks as a separate category
Substituting values for the missing data
The reporting technique for rating scale questions that presents the percentage of respondents who checked one of the top two positions on a rating scales is known as the
ad hoc category combination.
expedient analysis technique.
two-box technique.
paired
If the significance level is set at 0.05, a p-value is considered significant under which of the following circumstances?
When a Type 1 error has been made
If the
p-value
is less than 0.05
When a Type 2 error has been made
If the null hypothesis is proven false
A bar chart where the values of a variable are placed along the x-axis and the absolute or relative frequency along the y-axis is called a _______ and can be developed from the _______.
histogram; one-way frequency tabulation
frequency polygon; one-way frequency tabulation
cumulative distribution graph; cumulative data
bar graph; cumulative data
When survey participants have answered questions that require a numerical response on five possible locations ranging from “strongly disagree” to “strongly agree,” the individuals preparing the data will follow instructions used for coding
subjective data.
raw data.
open-ended items.
closed-ended items
A frequency analysis reveals that the percentage of men owning Dalmatians is 9.93472. Which of the following illustrates the best way to display this finding?
9%
9.9%
9.93%
10%
If a researcher were to take 10 Asian countries where per capita income and automobile ownership by per capita were known, the researcher could likely find the overall picture of market size for the market by using which of the following methods?
Cross tabulation
Chain ratio method
Frequency analysis
Regression analysis
What is the purpose of the coding process?
To determine if the raw data meets minimum quality standards
To detect incorrect or invalid responses
To transform raw data into symbols
To encrypt the raw data so that it is secure from unauthorized use
When the p-value turns out to be lower than a 0.05 significance level, which action should be taken?
Measure the results against standard probability values.
Use a different teasing measure.
Reject the null hypothesis.
Accept the null hypothesis.
The main aim of editing is to establish
minimum quality standards for the raw data.
a balance between costs and accuracy.
codes for the raw data.
that the analysis is valid.
What contains explicit directions about how raw data from the questionnaires are coded in the data file?
Random file
Codebook
Data file
Spreadsheet
You have just completed data collection for a research project. Which of the following is the first thing you should do with the data?
Build a data file.
Run frequencies on the data to check for blunders.
Examine the data to detect and resolve incorrect, missing, or incomplete responses.
Determine the categories or classes you’ll use to code open-ended questions.
Which statement best describes the process of coding open-ended items?
Using high levels of measurement isn’t mandatory.
It’s more difficult than coding closed-ended items.
Very limited responses are expected when coding data.
Open-ended responses are factual and precise
Your null hypothesis reads as follows:
“The majority of respondents won’t purchase a new brand of low-fat, low-cholesterol ice cream.”
If your survey results show that the majority would purchase the new brand, then you would say that the researchers have
reconsidered the statistical measures.
rejected the null hypothesis.
accepted the null hypothesis.
removed the ice cream from the market.
The alternative hypothesis is selected when
the null hypothesis has been rejected.
a Type 2 error has been made.
a Type 1 error has been made.
the null hypothesis has been accepted.
Which of the following is a technique that measures the association between a criterion variable and one or more independent variables?
A. Regression analysis
B. Correlation analysis
C. Z-test
D. Analysis of variance
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