CEFS 521 Quiz 2
Question 1
1.25 out of 1.25 points
If the researcher knows that the mean is 60 and the standard deviation
is 6, then the majority of the scores falling between +1 or -1 standard
deviation of the mean fall between:
Selected Answer: 54 and 66
Question 2
1.25 out of 1.25 points
A student conducting a research study was told by her professor to use
a scatterplot in conjunction with calculating the correlation coefficient.
She discovered that the data points clustered along a straight line; this
means that:
Selected Answer: A linear relationship exists among the variables.
Question 3
1.25 out of 1.25 points
In a follow-up study, a researcher reported that the correlation is .85.
In the initial study, the correlation was .78. This means there is a/an:
Selected Stronger correlation between the variables in the
Answer: follow-up study.
Question 4
, 1.25 out of 1.25 points
A researcher determines that there is a positive correlation between
sleep and test scores; this means that as the amount of sleep is
increased, then test scores will:
Selected Answer: Increase.
Question 5
1.25 out of 1.25 points
When looking at a list of students’ test scores, the teacher notices that
one test score is significantly lower than the majority of the scores.
This is known as a/an:
Selected Answer: Outlier
Question 6
1.25 out of 1.25 points
The teacher has a small class with only 7 students. The teacher grades
their homework and reports scores of: 10, 7, 8, 12, 9, 11, and 13. What
is the median?
Selected Answer: 10
Question 7
1.25 out of 1.25 points
A group of researchers is attempting to design an instrument that will
measure self-esteem. The researchers have an extensive list of traits
that may contribute to this construct. Which analysis may assist the
research team in narrowing the list of traits into a few dimensions?
Selected Answer: Factor analysis
Question 8
1.25 out of 1.25 points
Question 1
1.25 out of 1.25 points
If the researcher knows that the mean is 60 and the standard deviation
is 6, then the majority of the scores falling between +1 or -1 standard
deviation of the mean fall between:
Selected Answer: 54 and 66
Question 2
1.25 out of 1.25 points
A student conducting a research study was told by her professor to use
a scatterplot in conjunction with calculating the correlation coefficient.
She discovered that the data points clustered along a straight line; this
means that:
Selected Answer: A linear relationship exists among the variables.
Question 3
1.25 out of 1.25 points
In a follow-up study, a researcher reported that the correlation is .85.
In the initial study, the correlation was .78. This means there is a/an:
Selected Stronger correlation between the variables in the
Answer: follow-up study.
Question 4
, 1.25 out of 1.25 points
A researcher determines that there is a positive correlation between
sleep and test scores; this means that as the amount of sleep is
increased, then test scores will:
Selected Answer: Increase.
Question 5
1.25 out of 1.25 points
When looking at a list of students’ test scores, the teacher notices that
one test score is significantly lower than the majority of the scores.
This is known as a/an:
Selected Answer: Outlier
Question 6
1.25 out of 1.25 points
The teacher has a small class with only 7 students. The teacher grades
their homework and reports scores of: 10, 7, 8, 12, 9, 11, and 13. What
is the median?
Selected Answer: 10
Question 7
1.25 out of 1.25 points
A group of researchers is attempting to design an instrument that will
measure self-esteem. The researchers have an extensive list of traits
that may contribute to this construct. Which analysis may assist the
research team in narrowing the list of traits into a few dimensions?
Selected Answer: Factor analysis
Question 8
1.25 out of 1.25 points
