| testRetestSimData {ufs} | R Documentation |
testRetestSimData is a simulated dataframe used to demonstrate the testRetestAlpha coefficient function.
Description
This dataset contains the true scores of 250 participants on some variable, and 10 items of a scale administered twice (at t0 and at t1).
Format
A data frame with 250 observations on the following 21 variables.
- trueScore
The true scores
- t0_item1
Score on item 1 at test
- t0_item2
Score on item 2 at test
- t0_item3
Score on item 3 at test
- t0_item4
Score on item 4 at test
- t0_item5
Score on item 5 at test
- t0_item6
Score on item 6 at test
- t0_item7
Score on item 7 at test
- t0_item8
Score on item 8 at test
- t0_item9
Score on item 9 at test
- t0_item10
Score on item 10 at test
- t1_item1
Score on item 1 at retest
- t1_item2
Score on item 2 at retest
- t1_item3
Score on item 3 at retest
- t1_item4
Score on item 4 at retest
- t1_item5
Score on item 5 at retest
- t1_item6
Score on item 6 at retest
- t1_item7
Score on item 7 at retest
- t1_item8
Score on item 8 at retest
- t1_item9
Score on item 9 at retest
- t1_item10
Score on item 10 at retest
Details
This dataset was generated with the code in the reliabilityTest.r test script.
Author(s)
Gjalt-Jorn Peters
Maintainer: Gjalt-Jorn Peters gjalt-jorn@userfriendlyscience.com
Examples
data(testRetestSimData);
head(testRetestSimData);
hist(testRetestSimData$t0_item1);
cor(testRetestSimData);