Tag: programming languages

Questions Related to programming languages

Which time span is used to interpret two-digit year values if the YEARCUTOFF= option is set to 1950?
technology programming languages

  1. 1950-2049

  2. 1950-2050

  3. 1949-2050

  4. 1950-2000

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Correct Option: A

PROC CONTENTS can read sequential files. The CONTENTS statement cannot.True or False?

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  1. True

  2. False

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Correct Option: B

How many characters can be used in a label

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  1. 40

  2. 96

  3. 200

  4. 256

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Correct Option: D

You can use only one DATALINES statement in a DATA step.True or False?
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  1. True

  2. False

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Correct Option: B

While working with Formats,If you don't specify the LIBRARY= option, your formats are stored in Work.Formats, and they exist

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  1. only for the current procedure

  2. only for the current DATA step

  3. only for the current SAS session

  4. permanently

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Correct Option: C

The default statistics produced by the MEANS procedure are n-count, mean, minimum, maximum, and

technology programming languages

  1. median

  2. range

  3. standard deviation

  4. standard error of the mean

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Correct Option: C

AI Explanation

To answer this question, we need to understand the default statistics produced by the MEANS procedure.

The MEANS procedure in statistical software, such as SAS or SPSS, calculates descriptive statistics for a given variable or set of variables. These statistics provide a summary of the data distribution.

The default statistics produced by the MEANS procedure are:

  1. n-count: This represents the number of non-missing values for the variable(s) being analyzed.
  2. mean: This represents the average value of the variable(s) being analyzed.
  3. minimum: This represents the smallest value observed in the variable(s).
  4. maximum: This represents the largest value observed in the variable(s).

The correct answer is C) standard deviation.

Option A) median: The median is not a default statistic produced by the MEANS procedure. The median represents the middle value in a set of data, which is not included in the default statistics.

Option B) range: The range is not a default statistic produced by the MEANS procedure. The range represents the difference between the maximum and minimum values, which are already included in the default statistics.

Option C) standard deviation: The standard deviation is a measure of the dispersion or spread of the data. It is not included in the default statistics produced by the MEANS procedure.

Option D) standard error of the mean: The standard error of the mean measures the variability of sample means from different samples. It is not included in the default statistics produced by the MEANS procedure.

Therefore, the correct answer is C) standard deviation.

Which statement will limit a PROC MEANS analysis to the variables Boarded, Transfer, and Deplane

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  1. by boarded transfer deplane;

  2. class boarded transfer deplane;

  3. output boarded transfer deplane;

  4. var boarded transfer deplane;

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Correct Option: D
Explanation:

To limit a PROC MEANS analysis to the variables Boarded, Transfer, and Deplane, we need to specify the variables in the procedure statement.

Option A "by boarded transfer deplane" is used to specify the variables used in the BY statement for the procedure. This is not used to limit the variables in the analysis.

Option B "class boarded transfer deplane" is used to classify variables. This option is not used to limit the variables in the analysis.

Option C "output boarded transfer deplane" is used to specify the variables to be included in the output dataset. This option is not used to limit the variables in the analysis.

Option D "var boarded transfer deplane" is used to specify the variables to be analyzed in the PROC MEANS statement. This option is correct as it limits the analysis to the specified variables.

Therefore, the answer is: D. var boarded transfer deplane;

Which of the following statements is true regarding BY-group processing

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  1. BY variables must be either indexed or sorted

  2. Summary statistics are computed for BY variables

  3. BY-group processing is preferred when you are categorizing data that contains few variables

  4. BY-group processing overwrites your data set with the newly grouped observations

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Correct Option: A

The WHERE statement does not perform automatic conversions(character/numeric) in comparisons :True or False?

technology programming languages

  1. True

  2. False

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Correct Option: B

The Equivalent Code for CATX(SP, OF X1-X4) is

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  1. X1||SP ||X2||SP||X3||SP||X4

  2. TRIM(X1)||SP||TRIM(X2)||SP||TRIM(X3)||SP||TRIM(X4)

  3. TRIM(LEFT(X1))||TRIM(LEFT(X2))||TRIM(LEFT(X3))||TRIM(LEFT(X4))

  4. TRIM(LEFT(X1))||SP||TRIM(LEFT(X2))||SP||TRIM(LEFT(X3))||SP||TRIM(LEFT(X4))

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Correct Option: D