BESC 3010 EXAM REVIEW
QUESTIONS WITH
CORRECT ANSWERS
Which of the following illustrates a negative correlation?
The more often a person exercises, the more muscle mass they will accumulate
The more often a person visits the dentist, the fewer cavities they have
As a person writes less, the quality of their writing decreases
The less often a person gets sick, the less sicks days they would need to take off work -
Answer-the more often a person visits the dentist, the fewer cavities they have
After a researcher rejects the null hypothesis, he or she needs to be aware of
Neither Type I nor Type II error
Type II error
Type I error
Both Type I and Type II error - Answer-type I error
If a data set is converted to z-scores, the new mean of the data set is:
1
3
0
-1 - Answer-0
If a data set is converted to z-scores, the new standard deviation of the data set is:
2
5
3
1 - Answer-1
Which z-score is closest to the mean?
-.6
-1.2
.02
3.3 - Answer-.02
A data set has a non-linear relationship between two variables. Which of the
calculations below are affected by this problem?
Means
Variances
, Standard Deviations
Pearson's r - Answer-pearson's r
Which of the following is most sensitive to extreme scores?
Median
Yoda
Mode
Range - Answer-range
Which is the lowest level of measurement needed to calculate a mean?
Nominal
Ratio
Interval
Ordinal - Answer-interval
What is the minimal level of data required to calculate a mode?
Nominal
Ordinal
Ratio
Interval - Answer-nominal
If a raw score distribution has a mean of 12 and a standard deviation of 3, what number
would have a z-score of -2?
36
6
9
15 - Answer-6
A sampling distribution of means is:
a population distribution
a distribution of means from many samples
highly skewed
always generalizable - Answer-a distribution of means from many samples
When trying to determine if there is a difference between the population and sample,
and when the population mean and population standard deviation is known, it is most
appropriate to use:
a Pearson's correlation
a single sample t-test
a z-test
a magic 8-ball - Answer-a z-test
Which of the following is an impossible value for both p and alpha?
.01
.00
.05
QUESTIONS WITH
CORRECT ANSWERS
Which of the following illustrates a negative correlation?
The more often a person exercises, the more muscle mass they will accumulate
The more often a person visits the dentist, the fewer cavities they have
As a person writes less, the quality of their writing decreases
The less often a person gets sick, the less sicks days they would need to take off work -
Answer-the more often a person visits the dentist, the fewer cavities they have
After a researcher rejects the null hypothesis, he or she needs to be aware of
Neither Type I nor Type II error
Type II error
Type I error
Both Type I and Type II error - Answer-type I error
If a data set is converted to z-scores, the new mean of the data set is:
1
3
0
-1 - Answer-0
If a data set is converted to z-scores, the new standard deviation of the data set is:
2
5
3
1 - Answer-1
Which z-score is closest to the mean?
-.6
-1.2
.02
3.3 - Answer-.02
A data set has a non-linear relationship between two variables. Which of the
calculations below are affected by this problem?
Means
Variances
, Standard Deviations
Pearson's r - Answer-pearson's r
Which of the following is most sensitive to extreme scores?
Median
Yoda
Mode
Range - Answer-range
Which is the lowest level of measurement needed to calculate a mean?
Nominal
Ratio
Interval
Ordinal - Answer-interval
What is the minimal level of data required to calculate a mode?
Nominal
Ordinal
Ratio
Interval - Answer-nominal
If a raw score distribution has a mean of 12 and a standard deviation of 3, what number
would have a z-score of -2?
36
6
9
15 - Answer-6
A sampling distribution of means is:
a population distribution
a distribution of means from many samples
highly skewed
always generalizable - Answer-a distribution of means from many samples
When trying to determine if there is a difference between the population and sample,
and when the population mean and population standard deviation is known, it is most
appropriate to use:
a Pearson's correlation
a single sample t-test
a z-test
a magic 8-ball - Answer-a z-test
Which of the following is an impossible value for both p and alpha?
.01
.00
.05
