Deck 4: The Ibm Spss Statistics Environment

Question 1

A t-test is?

A)Any statistical hypothesis test in which the test statistic follows a Student's t-distribution if the null hypothesis is supported
B)A test used only to recruit the best graduates to employment
C)A test for standard deviation
D)All of the above

Answer 1

A

Question 2

The central limit theorem requires a large number of samples to be taken before inferences about population/distribution can be drawn.

Answer 2

False

Question 3

What kind of variables would you crosstabulate?

A)Two or more categorical
B)Two or more continuous
C)One continuous and two or more categorical
D)One categorical and two or more continuous

Answer 3

A

Question 4

You have been asked to study A-level students' feelings about taking multiple choice tests.One of the categories of codes involves positive affect,which is subdivided into two subcategories of feeling of pleasure when getting an answer right,and banging their fist on the desk when finished.The relation between these subcategories and the overall category of positive affect is?

A)Sequential
B)Longitudinal
C)Strict inclusion
D)Randomized

Question 5

The standard deviation is the most valuable measure of spread or dispersion.

Question 6

In relationships between coding categories,the relation,'X is a place in Y; X is part of Y' in Spradley's taxonomy of semantic relations is labelled spatial.

Question 7

The formula P ± Z_c.l.S_P represents what?

A)Confidence interval for a proportion
B)Error rate of a population
C)Analysis of covariance
D)Average standard deviation

Question 8

It is necessary to calculate an estimate of the standard error of the proportion (S_P)before what can be constructed?

A)The sample mean
B)A confidence interval
C)The standard error of the mean
D)All of the above

Question 9

Calculate the sample standard deviation using the following data: 4,5,2,6,4,3,4

A)1.01
B)1.22
C)1.29 Yes,should be 1.29 !!
D)1.98

Question 10

Which of these variables would require coding prior to data entry?

A)Marital status of participants
B)Scores on an IQ test
C)Name of participants (where given)
D)The age of each participant

Question 11

When using Excel,using the $ symbol in front of the row and column designation indicates?

A)A relative reference
B)An unknown reference
C)An absolute reference
D)An input error

Question 12

You are asked to undertake a 2 × 2 study (treatment group × age)with pre- and post-test measures on the outcome variable.If including a column to identify case number,how many columns are required when inputting the data into SPSS?

A)3
B)4
C)5
D)6

Question 13

The process of marking segments of data with symbols,descriptive words,or category names is known as concurring.

Question 14

With the above study,the outcome variables are interval-scaled.Which descriptive statistics would need to be provided?

A)Means and medians for all
B)Means and standard deviations for pre- and post-test for both age categories; and both treatment groups
C)Standard deviations for both age groups,and means for both treatment groups
D)None of the above

Question 15

Take the formula Z = (X - µ)/σ,where µ is the mean of the population,X is the value of the element,Z is the z-score and σ is the standard deviation.What does this formula calculate?

A)Confidence interval
B)Standard score
C)Standard error of the mean
D)Analysis of variance

Question 16

Initial statistical analysis can be performed on data using software packages such as Excel.Which of the following is a formula for calculating the standard deviation in particular cells?

A)STDEV(C2:C105)
B)STAND(C2:C105)
C)SDEVI(C2:C105)
D)AVERAGE(C2:C105)

Question 17

A researcher is doing a study of peer groups in junior schools.They interview 5 boys and 5 girls.It is a grounded theory study.What type of codes are generated when scanning the transcriptions?

A)Longitudinal codes
B)Post hoc codes
C)Inductive codes
D)Deviant list codes

Question 18

You conduct a study and ask for participants to state their age in years on a questionnaire.Upon consideration,you are advised by a peer to recode this variable into three age categories.Which of the following may be a valid reason for this change?

A)To conduct a correlational analysis
B)The distribution of the age variable is skewed
C)There are missing values
D)Participants were reluctant to state their actual age

Question 19

Why would someone add value labels to coded variables?

A)To signify what the codes represent
B)To indicate which type of analysis to use
C)To identify every variable by name
D)To avoid using the same codes

Question 20

Why is it recommended to screen data prior to analysis?

A)It shows up errors in data entry.
B)It allows you to prepare tables and figures.
C)It helps decide which analysis to conduct.
D)To check how data have been collected.

Question 21

In SPSS,what is the data view window?

A)The sight through which all statistics can be viewed
B)The spreadsheet into which data are entered
C)A choice of statistical test
D)A set of goggles required for viewing statistics software

Question 22

Is a variable name shorter or longer than a variable label?

A)Shorter and less detailed
B)Shorter but more detailed
C)Longer and less detailed
D)Longer and more detailed

Question 23

To generate a frequency table in SPSS you would click on Analyze → Descriptive Statistics → Frequencies.