Deck 11: Quantitative Data Analysis

Question 1

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

Answer 1

True

Question 2

Data editing deals with detecting and correcting illogical,inconsistent,or illegal data and omissions in the information returned by the participants of the study.

Answer 2

True

Question 3

Illogical codes are values that are not specified in the coding instructions.

Answer 3

False

Question 4

Data transformation,a variation of data coding,is the process of changing the original numerical representation of a quantitative value to another value.

Question 5

Data coding involves assigning a number to the participants' responses so they can be entered into a database.

Question 6

Which of the following alternatives provides a way to deal with blank responses?

A)Ignore them.
B)Look at the participant's pattern of responses to other questions and from these answers deduce a logical answer to the question for the missing response.
C)Assign to the item the mean value of the responses of all those who have responded to that particular item.
D)All of the above

Question 7

Chi-square analysis does not allow us to test hypotheses.

Question 8

The mode and the median always have the same value.

Question 9

If you would have to determine the reliability of a scale (a set of questions),what measure would you use?

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

Question 10

Measures of dispersion include the mean,the median,and the mode.

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

Which of the following descriptive statistics provide a useful overview of ordinal data?

A)The mean and the median.
B)The median and the mode.
C)The mode and the mean.
D)The mean,the median,and the mode.

Question 13

An outlier response is an example of an illegal response.

Question 14

Data transformation is necessary when several questions have been used to measure a single concept.

Question 15

The median of a set of 10 observations,is the sum of the 10 individual observations divided by 10.

Question 16

Chi-square analysis is used when the independent variable and the dependent variable are nominal in nature.

Question 17

You want to provide an overview of the characteristics of the respondents in your sample.Which of the following would you use to provide insight in the gender of your respondents?

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

Question 18

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

Question 19

Computing the Cronbach's alpha allows you to check if a:

A)Multi-item measure is valid.
B)Multi-item measure is reliable.
C)Null hypothesis is significant.
D)Conceptual model is relevant.

Question 20

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

Question 21

Range refers to the extreme values in a set of observations.

Question 22

A hypothesis that postulates a significant positive relationship between two variables can be tested by examining the correlation between the two.

Question 23

The annual salaries of nine employees in a department are $65,000,$30,000,$25,000,$64,000,$35,000,$63,000,$32,000,$60,000,and $61,000.The median salary here works out to be about:

A)$48,333
B)$ 55.000
C)$60,000
D)$ 61,000

Question 24

Factorial validity can be established by submitting the data for factor analysis.

Question 25

Three measurements of dispersion connected with the mean are the range,the variance,and the mode.

Question 26

The median is the central item in a group of observations when they are arrayed in either an ascending or a descending order.

Question 27

The variance is calculated by subtracting the mean from each of the observations in the data set,taking the square of this difference,and dividing the total of these by the number of observations.

Question 28

The standard deviation offers an index of the spread of a distribution or the variability in the data.

Question 29

The annual salaries of nine employees in a department are $65,000,$30,000,$25,000,$64,000,$35,000,$63,000,$32,000,$60,000,and $61,000.The mean salary here works out to be about:

A)$48,333
B)$ 55.000
C)$60,000
D)$ 61,000

Question 30

A Pearson correlation matrix will indicate the direction,strength,and significance of the bivariate relationships of all the variables that were measured at an interval or ratio level.

Question 31

Reverse scoring is a specific type of data transformation.