Management and Business Research
Sixth Edition
by Mark Easterby-Smith, Richard Thorpe, Paul R. Jackson and Lena J. Jaspersen
Student Resources
Practice Quizzes
1. Which of the following is NOT true?
- Summary measures of location capture important features of the whole distribution of data for a variable.
- Summary measures of location are easier to remember than the original data.
- Summary measures of location indicate the centre of a set of data.
- Every data point contributes equally to a summary measure of location.
Ans: D
2. Which of the following measures of location is guaranteed NOT to change by adding a single extreme data point?
- mode
- median
- mean
- mid-mean
- none of these
Ans: E
3. Suppose that one data point in a dataset is altered. Which of the following is guaranteed to change?
- mode
- median
- mean
- mid-mean
Ans: C
4. Which of the following is NOT true?
- Summary measures of spread capture important features of the whole distribution of data for a variable.
- Summary measures of spread are easier to remember than the original data.
- Summary measures of spread indicate the amount of variability around a measure of location.
- Every data point contributes equally to a summary measure of spread.
Ans: D
5. Which of the following is TRUE?
- Robust measures are completely unaffected by measurement error.
- The median is more robust than the mean.
- Using robust measures means that the researcher does not have to worry about the assumptions of statistical methods.
- Robust measures are always less efficient.
Ans: B
6. In hypothesis testing, a type I error is ______.
- failing to confirm the researchers preferred hypothesis
- missing a real effect
- claiming an effect which is not actually real
- finding an effect which is not consistent with existing literature
Ans: C
7. Which of the following is TRUE about reference distributions?
- There is always a single correct reference distribution for a specific significance test.
- The normal distribution is what we should expect data to look like.
- Using the right reference distribution means that you do not have to check the quality of your data.
- Reference distributions are approximations which may be useful in practice.
Ans: D
8. Testing for a difference between three groups requires ______.
- normally distributed data within each group
- estimates of a summary measure of location for each group
- the assumption that all three groups are different from each other
- a true causal relationship between the grouping variable and the dependent variable
Ans: B
9. Testing an association between two variables requires ______.
- variables measured at least on an ordinal scale
- normally distributed data
- data without measurement error
- a true causal relationship between the two variables
Ans: A
10. Which of the following is appropriate for using the Kendalls tau correlation coefficient?
- two variables measured on nominal scales
- two variables measured on continuous scales
- one variable measured on an ordinal scale and one variable measured on a continuous scale
- one variable measured on an ordinal scale and one variable measured on a continuous scale
Ans: D