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Below is a demonstration for how a sample of 200 can be randomly drawn. Below is a demonstration for how an [[SurveySamples#Sampling_Methods|SRS sample]] can be drawn.

SPSS Numeric Functions

Apart from arithmetic operators, SPSS also offers a library of built-in numeric functions.

Contents

  1. SPSS Numeric Functions
    1. Range
    2. Uniform

Range

the RANGE function takes a variable and 1 or more pairs of low-high value pairs. It returns 1 for all cases with a value within the inclusive range of low to high. 

data list free / ID (F2) Score (F2).
begin data
1, 10, 2, 20, 3, 30, 4, 40, 5, 50, 6, 60, 7, 70, 8, 80, 9, 90
end data.
compute InRange=range(Score,30,40,70,80).
list all.

ID

Score

InRange

1

10

0

2

20

0

3

30

1

4

40

1

5

50

0

6

60

0

7

70

1

8

80

1

9

90

0

Uniform

The UNIFORM function selects from a random uniform distribution from 0 to N. Note that a random seed must be set first.

Below is a demonstration for how an SRS sample can be drawn. 

set seed=random.
compute rand=uniform(100000).
rank variables=rand /rank into rrand.
compute sample=0.
if (rrand le 200) sample=1.

CategoryRicottone

SPSS/NumericFunctions (last edited 2023-06-10 13:00:34 by DominicRicottone)