Question 1

A curve is too peaked when the kurtosis exceeds _____ and is too flat when it is below _____.
A) 0; 0
B) +1; -1
C) -1; +2
D) +5; +2
E) -2; -5

Accepted Answer

The answer of A curve is too peaked when the...

Question 2

A(n) _____ is a respondent (observation) that has one or more values that are distinctly different from the values of other respondents and can impact the validity of the findings.
A) outlier
B) abnormality
C) extreme
D) variance
E) deviant

Accepted Answer

An outlier is a respondent (observation) that has one or more values that are distinctly different (i.e., unusual or extreme) from the values of other respondents and can impact the validity of the findings. The other answer choices (B, C, D, and E) are related to the concept of outliers but do not precisely define it.

Question 3

Blank responses are referred to as missing data and do not have to be dealt with when analyzing data.

Accepted Answer

Blank responses can have a significant impact on the analysis of data and should be addressed through imputation or other methods to ensure accurate results.

Question 4

Manipulation checks can be used to verify that a respondent interpreted the description within the question correctly.

Accepted Answer

Manipulation checks are used to ensure that the respondent interpreted the question as intended, and did not misunderstand or misinterpret the instructions provided. This is important in order to ensure the accuracy and validity of the data collected.

Question 5

Data transformation is the process of changing data from the original form to a new format and is done to more easily understand the data.

Accepted Answer

Data transformation involves converting data from one form or structure to another, typically for analysis or further processing. This is done to make the data easier to work with and to extract insights and information.

Question 6

Data warehouses are computerized electronic storage devices that hold information collected by a business.

Accepted Answer

Data warehouses are computerized electronic storage devices designed to hold large amounts of data collected by a business or organization.

Question 7

A histogram is a horizontal bar chart that is constructed from information in frequency distribution and has space between the bars. .

Accepted Answer

A histogram is a vertical bar chart that is constructed from information in frequency distribution and does not have space between the bars.

Question 8

Pie charts and bar charts can both be used to display relative proportions of responses.

Accepted Answer

The answer of Pie charts and bar charts can both...

Question 9

A normal distribution is a continuous curve that describes all possible values of a variable.

Accepted Answer

A normal distribution is a continuous probability distribution that describes all possible values of a variable, with the majority of values clustering around the mean and evenly distributed on either side.

Question 10

The standard error is the standard deviation of the individual values of the sample times the square of the sample size. .

Accepted Answer

The standard error is the standard deviation of the sample means and is calculated as the standard deviation of the individual values divided by the square root of the sample size. The formula in the statement is incorrect.

Question 11

Measures of dispersion describe the tendency for sample responses to depart from the central tendency.

Accepted Answer

Measures of dispersion such as range, variance, and standard deviation explain the spread or variability of sample responses from the central tendency. Therefore, the statement is true.

Question 12

The range is the most difficult measure of dispersion to calculate. .

Accepted Answer

The range is the easiest measure of dispersion to calculate, as it only requires determining the difference between the highest and lowest values in a dataset.

Question 13

The standard deviation describes the spread or variability of the sample distribution values from the mean.

Accepted Answer

This is correct. The standard deviation is a measure of how spread out or varied the sample data is from the mean.

Question 14

Skewness measures the departure from a symmetrical (or balanced) distribution.

Accepted Answer

Skewness is a measure of the asymmetry of a distribution, and it indicates the degree to which a distribution deviates from symmetry. A positive skewness value indicates that a distribution has a downward tail and that the majority of the data lies to the left of the mean. A negative skewness value indicates that a distribution has an upward tail and that the majority of the data lies to the right of the mean.

Question 15

What is the advantage of using an average summated score over using a summated score?

Accepted Answer

The answer of What is the advantage of using an...

Question 16

Name and describe common visual tools to display the frequency distribution.

Accepted Answer

The answer of Name and describe common visual tools to...

Question 17

Discuss the typical tasks involved in data preparation.

Accepted Answer

The answer of Discuss the typical tasks involved in data...

Question 18

A researcher is in the preparation stage of quantitative data analysis and is concerned about missing data because it can impact the validity of his findings. Explain how he should deal with this problem.

Accepted Answer

The answer of A researcher is in the preparation stage...

Question 19

What is a frequency distribution and how is it useful in business research?

Accepted Answer

The answer of What is a frequency distribution and how...

Question 20

Name and describe the measures of dispersion.

Accepted Answer

The answer of Name and describe the measures of dispersion....

Quiz 12: Basic Data Analysis for Quantitative Research

A curve is too peaked when the kurtosis exceeds _ and is too flat when it is below _.

A(n) _____ is a respondent (observation) that has one or more values that are distinctly different from the values of other respondents and can impact the validity of the findings.