Description of Data

This data set contains the achievement test (English as a Second Language) results and

some background data collected during experimental trial of a new ESL program. The study was

one year in duration. Students were allocated to the experimental ESL program class and a

regular program control class on a random basis. Vocabulary and grammar tests were

administered to the students in both groups at the beginning and the end of the school year.

Data can be found bellow

Variables

The dataset includes 24 cases and 7 variables:

Student ID Group (1 - experimental, 2 - control) Gender (1 - male, 2 - female) Pre-test vocabulary scores (scores range from 0 - 25) Pre-test grammar scores (scores range from 0 - 25) Post-test vocabulary scores (scores range from 0 - 25) Post-test grammar scores (scores range from 0 - 25)

1. Present a description of your variables: Provide a codebook with the following four columns: (1) Variable name; (2) Variable label; (3) Value & Value label and Measurement type (i.e., nominal, ordinal, continuous). Please present this as a table.