Deck 14: Quantitative Data Analysis

Question 1

Cronbach's alpha indicates to what extent scale items are correlated to each other?

Answer 1

True

Question 2

Fill in the missing text: A Chi-square test can be used if the independent variable is measured on a …….(1)…….scale and the dependent variable on a ……..(2)……..scale.

A)(1)nominal/ordinal - (2)nominal/ordinal.
B)(1)nominal/ordinal - (2)interval/ratio.
C)(1)interval/ratio - (2)nominal/ordinal.
D)(1)interval/ratio - (2)interval/ratio.

Answer 2

A

Question 3

Cronbach's alpha and the split-half reliability coefficient are both instruments to determine the reliability of a scale.

Answer 3

True

Question 4

With what instrument could the validity of a scale (a set of questions)best be determined?

A)Cronbach's alpha.
B)Kendall's tau.
C)Levene's test.
D)With none of the above instruments.

Question 5

In which way you could better not give an overview of ordinal data?

A)By the mean.
B)By percentiles.
C)By the median.
D)By the mode.

Question 6

Chi-square analysis is used when the independent variable is used when the dependent variable is nominal or ordinal.

Question 7

In what way could you best give an overview of ordinal data?

A)By the mean.
B)By cross tables.
C)By the median.
D)By the mode.

Question 8

Which instrument would one use to assess the reliability of a scale (a set of questions)?

A)Cronbach's alpha.
B)Kendall's tau.
C)Levene's test.
D)Pearson's correlation coefficient.

Question 9

After collecting and entering the data in SPSS,a researcher looks at the correlation matrix in which all variables of his conceptual model are included.Which information can the researcher not derive from this matrix?

A)An indication of the possibility of multicollinearity.
B)The existence of cause-effect relationships between certain variables.
C)Relationships between variables.
D)Whether relationships between variables are positive or negative.

Question 10

A researcher wants to give an overview of the characteristics of the respondents in his sample.How could this researcher best provide insight in the gender of the respondents?

A)By a frequency table and a bar chart.*
B)By the mode,median and the standard deviation.
C)By a frequency table and a correlation matrix.
D)By the mean and the variance.

Question 11

Chi-square analysis is a suitable technique to determine if the sample is a reflection of the population in terms of access to the internet (access/no access).

Question 12

By means of chi-square analysis it is not possible to test hypotheses.

Question 13

The Cronbach's alpha of a scale indicates to what extent different items measure the same construct.

Question 14

Chi-square analysis is used when the independent variable is nominal or ordinal.

Question 15

With what instrument could the predictive validity of a metric scale (a set of questions)best be determined?

A)Cronbach's alpha.
B)A correlation-coefficient.
C)Fisher's r-to-z test.
D)With none of the above mentioned instruments.

Question 16

The mode and the median are always the same value.

Question 17

Computing the Cronbach's alpha is the way to check if the:

A)Measure is valid.
B)Measure is reliable.
C)Null hypothesis is significant.
D)Conceptual model is relevant.

Question 18

An overview of a variable on nominal level can be given by a pie chart.

Question 19

The closer the Cronbach's alpha is to 1,the higher the reliability of a scale.

Question 20

In what way do the concepts causality and correlation relate to each other?

A)Causality is needed for correlation.
B)Causality is one of the conditions for correlation.
C)Correlation is one of the conditions for causality.
D)Correlation (alone)is enough evidence for causality.

Question 21

Discriminant validity can be determined by means of,amongst others,correlations and factor analyses.

Question 22

Mean and median actually are identical concepts.