Question 1

​The correspondence between two variables is referred to as a(n)_______________.

Accepted Answer

relationship​

Question 2

​Alan has developed an intervention that can be used by family resource networks to provide basic child development information to high-risk families.Although he has trained at least one person from each family resource network and has excellent program documentation,he is still concerned.Specifically,Alan is probably worried about ____.

Accepted Answer

A)   ​low reliability of the measure
B)   ​random heterogeneity of participants
C)   ​poor reliability of treatment implementation
D)   ​random irrelevancies in the setting C

Question 3

​Violation of the assumptions underlying statistical tests can result in increased risk of ____.

Accepted Answer

A)   ​Type I error only
B)   ​Type II error only
C)   ​both Type I and Type II errors
D)   ​neither Type I nor Type II error C

Question 4

​In terms of signal and noise,a Type II error represents a ____.

Accepted Answer

A)   ​false positive
B)   ​false negative
C)   ​true positive
D)   ​true negative

Question 5

​The ____ is the score at the middle,or 50th percentile,of a group of scores.

Accepted Answer

A)   ​dispersion
B)   ​median
C)   ​mode
D)   ​range

Question 6

​A low strength signal is associated with ____.

Accepted Answer

A)   ​low reliability of the measure
B)   ​low strength of the intervention
C)   ​poor reliability of treatment implementation
D)   ​random heterogeneity of respondents

Question 7

The ______________ is equal to the highest value is a distribution minus the lowest value.
​

Accepted Answer

The answer of The ______________ is equal to the highest...

Question 8

​A weak intervention can result in increased risk of ____.

Accepted Answer

A)   ​Type I error only
B)   ​Type II error only
C)   ​both Type I and Type II errors
D)   ​neither Type I nor Type II error

Question 9

​A life satisfaction scale has both positively-worded items (e.g. ,"I feel as though life is good to me")and negatively-worded items (e.g. ,"I have nothing to look forward to.").All items use a scale of 1 ("disagree strongly")to 5 ("agree strongly").In order to analyze this data,it must undergo a(n)____.

Accepted Answer

A)   ​item inversion
B)   ​item reversal
C)   ​scale reversal
D)   ​scale inversion

Question 10

​The probability that the researcher will conclude there is a relationship when in fact there is one is referred to as statistical _______________.

Accepted Answer

The answer of ​The probability that the researcher will conclude...

Question 11

​The automated method for checking data-entry accuracy in which data are entered once and then a second time,with the software automatically stopping each time a discrepancy is detected is referred to as the _______________ system.

Accepted Answer

The answer of ​The automated method for checking data-entry accuracy...

Question 12

​Conclusion validity applies to quantitative but not qualitative research.

Accepted Answer

A) True 
 B)False

Question 13

​The level of statistical significance is also called the _______________ level.

Accepted Answer

The answer of ​The level of statistical significance is also...

Question 14

​Descriptive statistics deal with whether or not a statistically significant difference exists.

Accepted Answer

A) True 
 B)False

Question 15

​Robb carefully designed a study to test a method for reducing test anxiety among students.On the day he conducts his post-test,a broken water main nearby results in jack hammering and other construction sounds that are seem to be distracting research participants.Robb's ability to detect differences among his groups may have been compromised by ____.

Accepted Answer

A)   ​low reliability of the measure
B)   ​random heterogeneity of participants
C)   ​poor reliability of treatment implementation
D)   ​random irrelevancies in the setting

Question 16

​Random heterogeneity of subjects can result in increased risk of ____.

Accepted Answer

A)   ​Type I error only
B)   ​Type II error only
C)   ​both Type I and Type II errors
D)   ​neither Type I nor Type II error

Question 17

​If the scores on a test are normally distributed,what percentage will be within two standard deviations of the mean?

Accepted Answer

A)   ​50
B)   ​68
C)   ​95
D)   ​99

Question 18

​Many statistical analyses are based on the assumption that the data are distributed normally.

Accepted Answer

A) True 
 B)False

Question 19

What is the range of this set of scores? 10,5,5,5,4,6,7,2,10,7,10,2,6,7,6

Accepted Answer

A)   ​2
B)   ​6
C)   ​8
D)   ​9

Question 20

Random irrelevancies in the environment can result in increased risk of ____.

Accepted Answer

A)   ​Type I error only
B)   ​Type II error only
C)   ​both Type I and Type II errors
D)   ​neither Type I nor Type II error

Exam 11: Introduction-To-Data-Analysis

​The correspondence between two variables is referred to as a(n)_______________.

​Violation of the assumptions underlying statistical tests can result in increased risk of ____.

​In terms of signal and noise,a Type II error represents a ____.

​The ____ is the score at the middle,or 50th percentile,of a group of scores.

​A low strength signal is associated with ____.

The ______________ is equal to the highest value is a distribution minus the lowest value. ​

​A weak intervention can result in increased risk of ____.

​The probability that the researcher will conclude there is a relationship when in fact there is one is referred to as statistical _______________.

​The automated method for checking data-entry accuracy in which data are entered once and then a second time,with the software automatically stopping each time a discrepancy is detected is referred to as the _______________ system.

​Conclusion validity applies to quantitative but not qualitative research.

​The level of statistical significance is also called the _______________ level.

​Descriptive statistics deal with whether or not a statistically significant difference exists.

​Random heterogeneity of subjects can result in increased risk of ____.

​If the scores on a test are normally distributed,what percentage will be within two standard deviations of the mean?

​Many statistical analyses are based on the assumption that the data are distributed normally.

What is the range of this set of scores? 10,5,5,5,4,6,7,2,10,7,10,2,6,7,6

Random irrelevancies in the environment can result in increased risk of ____.

The correspondence between two variables is referred to as a(n)_______________.

Violation of the assumptions underlying statistical tests can result in increased risk of ____.

In terms of signal and noise,a Type II error represents a ____.

The ____ is the score at the middle,or 50th percentile,of a group of scores.

A low strength signal is associated with ____.

The ______________ is equal to the highest value is a distribution minus the lowest value.

A weak intervention can result in increased risk of ____.

The probability that the researcher will conclude there is a relationship when in fact there is one is referred to as statistical _______________.

The automated method for checking data-entry accuracy in which data are entered once and then a second time,with the software automatically stopping each time a discrepancy is detected is referred to as the _______________ system.

Conclusion validity applies to quantitative but not qualitative research.

The level of statistical significance is also called the _______________ level.

Descriptive statistics deal with whether or not a statistically significant difference exists.

Random heterogeneity of subjects can result in increased risk of ____.

If the scores on a test are normally distributed,what percentage will be within two standard deviations of the mean?

Many statistical analyses are based on the assumption that the data are distributed normally.