Long answer question answers Flashcards
A TV channel has received many complaints after showing a controversial documentary. They are interested to see whether there is an association between the gender and country of birth of those who complained. How many complaints were received?
a)417 b)265 c)690 d)685
d)685
Look at Levene’s Test of for Equality of Variances. What can you conclude?
a) p > .05 so equality of variances between the groups can be assumed
b) p < .05 so equality of variances between the groups can be assumed
c) We cannot say anything about equality of variances between the groups from this table.
d) p > .05 so equality of variances between the groups can not be assumed
H
a) p > .05 so equality of variances between the groups can be assumed
Using the data provided above, please use the below output to obtain the regression equation for predicting scores on systolic blood pressure from scores on job satisfaction. (IV=Job satisfaction; DV=Systolic BP). a) Y = 175.42 + (-1.12X) b) Y=-1.12 + (175.42X) c) Y=18.86 + 175.42(X) d) Y= 175.42 = (-4.52X)
a) Y = 175.42 + (-1.12X)
What is the correlation between job satisfaction and systolic blood pressure
a) r(9) = -.85, p
d) r(8) = -.85, p
Job satisfaction also explained a significant proportion of variance in systolic blood pressure,
a) R2=.68,F(1,9)=20.47,p=.002. b) R2=.85,F(1,8)=20.47,p=.002. c) R2=.72,F(1,8)=20.47,p=.002. d) R2 = .72, F(1, 9) = 2398.61, p = .002.
c) R2=.72,F(1,8)=20.47,p=.002.
A company which to investigate whether the number of sick days taken by their employees significantly differs based on the departmental manager. An unrelated ANOVA is conducted. Which of the following is true?
Adam only significantly differs from Frank
Adam only significantly differs from Frank
A student is interested in whether people who earn over 100K a year are happier than people who earn less than 100K per year. They obtain happiness ratings from a sample and conduct an unrelated t test. Which of the following is true?
None of the above
None of the above
A TV channel has received many complaints after showing a controversial documentary. They are interested to see whether there is an association between the gender and country of birth of those who complained. What is the Pearson Chi square value?
2.344
2.344
A student records the mood of all her fellow residents in the morning, afternoon and evening. If a significant result is found, what test should she conduct to reveal where specific differences lie?
Post hoc tests such as Bonferroni
Post hoc tests such as Bonferroni
What is the regression equation for the prediction of variable B using A
B= 0.68(Variable A) + 5.616
B= 0.68(Variable A) + 5.616
A student is interested in whether people who earn over 100K a year are happier than people who earn less than 100K per year. They obtain happiness ratings from a sample and conduct an unrelated t test. Which of the following conclusions can be made based on the results?
People earning > 100k were found to be happier but the differences was not statistically significant
People earning > 100k were found to be happier but the differences was not statistically significant
A TV channel has received many complaints after showing a controversial documentary. They are interested to see whether there is an association between the gender and country of birth of those who complained. How many complaints were received?
685
685
A student records the mood of all of her fellow hall residents in the morning, afternoon, evening. Which of the following can be conducted?
Mood significantly differed during the day of 5% level
Mood significantly differed during the day of 5% level
An airline company records passenger’s levels of fear of flying before and after an educational programme. Based on the t test which of the following is true?
The educational programme did significantly decrease the level of fear experienced
The educational programme did significantly decrease the level of fear experienced
How much variance in variable B can be accounted for by Variable A
1%
1%
A TV channel has received many complaints after showing a controversial documentary. They are interested to see whether there is an association between the gender and country of birth of those who complained. From which of these countries were the lowest number of complaints received?
Scotland
Scotland
A student records the mood of all of her fellow hall residents in the morning, afternoon, evening. Which of the following is the mean mood rating for the afternoon?
6.12
6.12
What is the r value for the correlation between A and B?
.39
.39
A company wishes to investigate whether the number of sick days taken by their employees significantly differs based on the departmental manager. An unrelated ANOVA is conducted. How many levels does the IV have?
6
6
A TV channel has received many complaints after showing a controversial documentary. They are interested to see whether there is an association between the gender and country of birth of those who complained. Which of the following is true?
Gender and country of birth were not significantly associated
Gender and country of birth were not significantly associated
A company wishes to investigate whether the number of sick days taken by their employees significantly differs based on the departmental manager. An unrelated ANOVA is conducted. Which of the following is true?
All of the above
All of the above
A company wishes to investigate whether the number of sick days taken by their employees significantly differs based on the departmental manager. An unrelated ANOVA is conducted. Which of the following is true?
Sick days do differ significantly based on the manager (p< .001)
Sick days do differ significantly based on the manager (p< .001)
The Wilkie-Brown and the Soper Scales are likely to:
Correlate negatively
Lower scores on one scale seem to correspond with higher scores on the other scale, so this indicates a negative correlation.
For the correlation between the Wilkie-Brown and the Soper Scales, N =
5
There are 5 scores for each scale. The correlation examines the covariance in these scores, so the N will be 5.
What is the r value for the correlation between variables A and B?
0.39
Which of the following is true about the correlation between variables A and B?
688
Which of the following is true about the correlation between variables A and B?
It is positive and statistically significant.
The Pearson’s correlation coefficient is positive and the p-value is less than 0.05.
How much variance in variable B can be accounted for by variable A?
1%
What is the regression equation for the prediction of variable B using variable A?
y= 0.68(Variable A) + 5.616
How many of the women’s verbal fluency scores increased?
6
The null hypothesis is:
Oestrogen replacement therapy does not affect verbal fluency.
What is the mean difference score?
.921
Is there a significant difference between the before and after scores?
Yes, t(683) = 17.557, p < .001
The independent variable in the above table is:
ability to recall locations of features
The null hypothesis states:
There is no difference in recall between the two groups.
Is the difference between the two samples significantly different at the 5% level?
yes
Which of the following is true?
There is no significant difference between the happiness ratings of the two groups.
Which of the following conclusions can be made based on the results?
People earning >£100K were found to be happier, but this difference may just be due to chance.
