Test Bank For Research Methods and Statistics: A Critical
Thinking Approach 5th Edition By Sherri L. Jackson
9781305563834 Chapter 1-15 Complete Guide .
what are the advantages of primary data? - ANSWER: researcher provided with exactly the
information needed
what are the disadvantages of using primary data? - ANSWER: time consuming and resource intensive
what are the disadvantages of using secondary data? - ANSWER: no direct control over research
quality may be compromised
what are the advantages of secondary data? - ANSWER: time and effort needed to gather info is
reduced
more cost effective
what are the disadvantages of the mean? - ANSWER: uses all the data but the outliers as it can be
badly distorted
can't be used with extreme values
what are the disadvantages of the median? - ANSWER: less sensitive to variations in data so not good
for using with a small data set
what are the disadvantages of the mode? - ANSWER: sometimes a data set may not have a most
frequent value
what are the advantages of the range? - ANSWER: takes extreme scores into account
what are the disadvantages of the range? - ANSWER: most data is ignored
may not reveal the full extent of the distribution
what are the advantages of standard deviation? - ANSWER: shows the range temperature compared
to the mean:
small = consistent
large = varied results
how do you calculate the standard deviation? - ANSWER: 1. table of data
2. calculate mean
3. subtract mean from each number in sample (X-x ̅)
4. square (X-x ̅)
5. add all the squared numbers together
6. divide the sum by n-1 to give variance
7. square root the variance
What is a parametric test? - ANSWER: A test that assumes the populations drawn from are normally
distributed
What is a non-parametric test? - ANSWER: Distribution free tests, used when assumptions are not
met:
Data does not come from a normal distribution
Variances are not assumed to be the same in different groups
Data is nominal or ordinal
Assumptions of ANOVA cannot be met
Thinking Approach 5th Edition By Sherri L. Jackson
9781305563834 Chapter 1-15 Complete Guide .
what are the advantages of primary data? - ANSWER: researcher provided with exactly the
information needed
what are the disadvantages of using primary data? - ANSWER: time consuming and resource intensive
what are the disadvantages of using secondary data? - ANSWER: no direct control over research
quality may be compromised
what are the advantages of secondary data? - ANSWER: time and effort needed to gather info is
reduced
more cost effective
what are the disadvantages of the mean? - ANSWER: uses all the data but the outliers as it can be
badly distorted
can't be used with extreme values
what are the disadvantages of the median? - ANSWER: less sensitive to variations in data so not good
for using with a small data set
what are the disadvantages of the mode? - ANSWER: sometimes a data set may not have a most
frequent value
what are the advantages of the range? - ANSWER: takes extreme scores into account
what are the disadvantages of the range? - ANSWER: most data is ignored
may not reveal the full extent of the distribution
what are the advantages of standard deviation? - ANSWER: shows the range temperature compared
to the mean:
small = consistent
large = varied results
how do you calculate the standard deviation? - ANSWER: 1. table of data
2. calculate mean
3. subtract mean from each number in sample (X-x ̅)
4. square (X-x ̅)
5. add all the squared numbers together
6. divide the sum by n-1 to give variance
7. square root the variance
What is a parametric test? - ANSWER: A test that assumes the populations drawn from are normally
distributed
What is a non-parametric test? - ANSWER: Distribution free tests, used when assumptions are not
met:
Data does not come from a normal distribution
Variances are not assumed to be the same in different groups
Data is nominal or ordinal
Assumptions of ANOVA cannot be met
