IBM C2090-011 Exam Questions Instant Access

Question 1

A paired samples t4est is different from an independent t-test because it:

AAssesses each person twice.

BCompares groups on correlations.

CCompares groups on means.

DCompares groups on variances.

Answer : A

Question 2

As of PASW Statistics 17, options for exporting tables to Excel files include which of the following? (Choose all that apply.)

ACreate a new worksheet in an existing Microsoft Excel file

BAdd to an existing worksheet

CCreate a new Microsoft Excel file

DExport all layers of a pivot table

Answer : A, B, C, D

Question 3

In the output of the CROSSTABS procedure, large residuals indicate agreement between the data and the null hypothesis of independence.

ATrue

BFalse

Answer : B

Question 4

What statistical test should be used to assess whether the percentage differences observed in a crosstabs table could have occurred by chance?

ACorrelation

BLinear Regression

CT-Test

DChi-square test of independence

Answer : D

Question 5

Which statement is true about this box plot?

AThe mean is 14.

BThe standard deviation is 14 (20 minus 6).

CThe standard deviation is4 (16 minus 12).

Dof the outliers are on the lower end of the distribution.

Answer : D

Question 6

Consider the table below. Which IBM SPSS Statistics dialog was used to generate it?

AThe Crosstabs... dialog

BThe Means... dialog

CThe Case Summaries.., dialog

DThe Select Cases... dialog

Answer : B

Question 7

For a variable salary we have the statistics as shown in the figure below.

The reported Mean is incorrect because a value, -9999, is included in its calculation. How can this situation be fixed?

ADefine -9999 as a system-missing value.

BRemove all cases with the value -9999 for the variable salary from the data file.

CDefine -9999 as a user-missing value.

DDefine -9999 as both a system- and user-missing value.

Answer : C

IBM SPSS Statistics Level 1 v2 C2090-011 Exam Questions