Question 1

Which option for the treatment of missing values involves the researcher using the respondents' pattern of responses to calculate a suitable response to the missing questions?

Accepted Answer

Substitute an imputed response involves using statistical methods to estimate and fill in missing data based on the patterns observed in the available data.

Question 2

You would use scale transformation under which circumstance?

Accepted Answer

Scale transformation is used to make different scales comparable, such as when comparing image variables on a semantic differential scale with attitude variables on a continuous scale and lifestyle variables on a Likert scale.

Question 3

Which treatment of unsatisfactory responses is desirable if (1) the unsatisfactory respondents do not differ from satisfactory respondents in obvious ways responses on key variables are missing?

Accepted Answer

Discarding unsatisfactory responses is desirable if the unsatisfactory respondents do not differ from satisfactory respondents in obvious ways and responses on key variables are missing.

Question 4

Which option for the treatment of missing values involves cases, or respondents, with any missing responses being discarded from the analysis?

Accepted Answer

Casewise deletion involves discarding any cases or respondents with missing responses from the analysis.

Question 5

involves a manipulation of scale values to ensure comparability with other scales or otherwise make the data suitable for analysis.

Accepted Answer

Scale transformation involves changing the scale of measurement to make data comparable or suitable for analysis.

Question 6

The general guidelines for coding unstructured questions and questionnaires include all of the following except .

Accepted Answer

Abbreviating answers as much as possible is not a guideline for coding unstructured questions; instead, the focus should be on retaining as much detail as possible.

Question 7

Unsatisfactory responses uncovered in the editing stage of the data- preparation process are commonly handled by doing any of the following except .

Accepted Answer

Recoding unsatisfactory responses is not a common method for handling unsatisfactory responses in the editing stage, as it involves altering the original data, which can lead to inaccuracies. Instead, other methods like returning to the field, discarding, or assigning missing values are used to maintain data integrity.

Question 8

Which is not a part of the process of selecting a data analysis strategy?

Accepted Answer

The answer of Which is not a part of the...

Question 9

are statistical techniques that attempt to group data based on underlying similarity, and thus allow for interpretation of the data structures. No distinction is made as to which variables are dependent and which are independent.

Accepted Answer

Interdependence techniques are used to group data based on underlying similarities without distinguishing between dependent and independent variables.

Question 10

When utilizing univariate techniques, for metric data, when there is (are) , the z test and the t test can be used.

Accepted Answer

The z test and the t test are appropriate for univariate analysis of metric data with either one sample or two independent samples. Therefore, choice D is correct, while choice C is incorrect as it involves more than two independent samples.

Question 11

Which statement is true concerning ethical issues concerned with data preparation?

Accepted Answer

All the statements are true as they address ethical concerns in data preparation, including ensuring data quality, adhering to statistical assumptions, and the ethical implications of discarding data post-analysis.

Question 12

You would use weighting under which circumstance?

Accepted Answer

Weighting is used to adjust the sample so that greater importance is attached to respondents with certain characteristics, ensuring that the sample more accurately reflects the population.

Question 13

When utilizing univariate techniques, the samples are when the data for the two samples relate to the same group of respondents.

Accepted Answer

Paired samples occur when the data for the two samples relate to the same group of respondents, often used in before-and-after studies.

Question 14

When utilizing univariate techniques, for metric data, when there is (are) , one- way analysis of variance (one- way ANOVA) can be used.

Accepted Answer

One-way ANOVA is used when there are multiple independent samples, not just two. Therefore, option C is the best choice.

Question 15

When utilizing univariate techniques, for nonmetric data, when there is (are) , chi- square, Mann- Whitney, Median, K- S, and K- W one- way ANOVA tests can be used.

Accepted Answer

The Mann-Whitney test is used for comparing two independent samples, while the other tests listed are not appropriate for nonmetric data.

Question 16

Univariate techniques can be classified based on .

Accepted Answer

Univariate techniques can be classified based on whether the data are metric or nonmetric and whether one, or two or more samples are involved. Therefore, choices A and B are correct. However, univariate techniques do not distinguish between interdependence and dependence techniques, so choice C is not correct. Therefore, the best choice is D - A and B are correct.

Question 17

are appropriate when there is a single measurement of each element in the sample, or there are several measurements of each element but each variable is analyzed in isolation.

Accepted Answer

Univariate techniques are used when analyzing a single variable or measurement at a time, making them suitable for situations with a single measurement per element or when analyzing variables in isolation.

Question 18

Respondents have been asked to express their degree of agreement with a series of lifestyle statements on a 1- to- 5 scale, assuming that 9 has been designated for missing values, data values of 0, 6, 7, and 8 are out of range. Where in the data- preparation process might any out- of- range data be caught?

Accepted Answer

Out-of-range data is typically identified and corrected during the data cleaning process, which involves checking for and addressing errors or inconsistencies in the dataset.

Question 19

Univariate techniques can be classified based on .

Accepted Answer

Univariate techniques can be classified based on whether the data are metric or nonmetric (A) and whether one, two, or more than two samples are involved (B). Both of these factors are important in determining the appropriate statistical technique to use. Therefore, options A and B are correct, making option D the best choice. Option C is not accurate as it does not relate to the classification of univariate techniques.

Question 20

In Excel, the statement can be used to make a logical check.

Accepted Answer

The "If" statement in Excel is used to perform logical checks and execute different actions based on whether a condition is true or false.

Quiz 14: Data Preparation

Which option for the treatment of missing values involves the researcher using the respondents' pattern of responses to calculate a suitable response to the missing questions?

You would use scale transformation under which circumstance?

Which treatment of unsatisfactory responses is desirable if (1) the unsatisfactory respondents do not differ from satisfactory respondents in obvious ways responses on key variables are missing?

Which option for the treatment of missing values involves cases, or respondents, with any missing responses being discarded from the analysis?

involves a manipulation of scale values to ensure comparability with other scales or otherwise make the data suitable for analysis.

The general guidelines for coding unstructured questions and questionnaires include all of the following except .

Unsatisfactory responses uncovered in the editing stage of the data- preparation process are commonly handled by doing any of the following except .

Which is not a part of the process of selecting a data analysis strategy?

are statistical techniques that attempt to group data based on underlying similarity, and thus allow for interpretation of the data structures. No distinction is made as to which variables are dependent and which are independent.

When utilizing univariate techniques, for metric data, when there is (are) , the z test and the t test can be used.

Which statement is true concerning ethical issues concerned with data preparation?

You would use weighting under which circumstance?

When utilizing univariate techniques, the samples are when the data for the two samples relate to the same group of respondents.

When utilizing univariate techniques, for metric data, when there is (are) , one- way analysis of variance (one- way ANOVA) can be used.

When utilizing univariate techniques, for nonmetric data, when there is (are) , chi- square, Mann- Whitney, Median, K- S, and K- W one- way ANOVA tests can be used.

Univariate techniques can be classified based on .

are appropriate when there is a single measurement of each element in the sample, or there are several measurements of each element but each variable is analyzed in isolation.

Univariate techniques can be classified based on .

In Excel, the statement can be used to make a logical check.