IBM C2090-011 - IBM SPSS Statistics Level 1 v2 Exam
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Total 54 questions
Question #6 (Topic: Topic 1)
There are two major types of errors one can make when attempting to draw conclusions about the larger population based on the information collected in the
sample. For example, when performing an Independent Samples T-Test, one type of error that can occur is when there are significant differences between the
groups based on a scale level dependent variable, but the test fails to detect them. Which of the following choices this sort of error? (Choose two.)
sample. For example, when performing an Independent Samples T-Test, one type of error that can occur is when there are significant differences between the
groups based on a scale level dependent variable, but the test fails to detect them. Which of the following choices this sort of error? (Choose two.)
A. Type/error
B. Type//error
C. False negative
D. False positive
Answer: BC
Question #7 (Topic: Topic 1)
we have the statistics as shown in the figure below.
[IBM-C2090-011-1.0/xmlfile-6_1.png]
The reported Mean is incorrect because a value, -9999, is included in its calculation. How can this situation be fixed?
[IBM-C2090-011-1.0/xmlfile-6_1.png]
The reported Mean is incorrect because a value, -9999, is included in its calculation. How can this situation be fixed?
A. Define -9999 as a system-missing value from the data file
C. Define -9999 as a user-missing value
D. Define -9999 as a both a system- and user-missing value
Answer: C
Question #8 (Topic: Topic 1)
You have been asked to create a categorical variable from a scale variable, income, illustrated in the histogram below. The resulting categorical variable must
have 5 categories with an approximately equal number of cases in each category. Which way would you accomplish this using the IBM SPSS Statistics Visual
Binning dialog?
[IBM-C2090-011-1.0/xmlfile-8_1.png]
have 5 categories with an approximately equal number of cases in each category. Which way would you accomplish this using the IBM SPSS Statistics Visual
Binning dialog?
[IBM-C2090-011-1.0/xmlfile-8_1.png]
A. Use the automatic option Equal Width Intervals
B. Use the automatic option Equal Percentiles Based on Scanned Cases
C. Use the automatic option Cutpoints at Mean and Selected Standard Deviations Based on Scanned Cases
D. Specify Cutpoints manually at 10000, 20000, 30000, 40000 & 50000
Answer: B
Question #9 (Topic: Topic 1)
If you build an expression manually, as opposed to using a function (e.g., specify (V1+V2)/2 instead of MEAN(V1,V2)), which statement is true?
A. If any of the variables used in the expression has a missing value, it will be ignored and the expression will proceed to evaluate with variables that have valid values.
B. It will always return a valid value for each case, regardless of whether one or more of the source variable values are missing.
C. If any of the variables used in the expression has a missing value, the result for that case is a system-missing value.
D. If any of the variables used in the expression has a missing value, you will get a notification pointing this out before you proceed.
Answer: C
Question #10 (Topic: Topic 1)
In the Aggregate data procedure, if you specify more than one Break Variable, ________________ in the Break Variables list will determine case order.
A. Variable size
B. Variable label
C. Variable name
D. Variable order
Answer: D
