1. The third step is to convert each of the scores to a t-score.
   • The equation to a t-score is 50+(10*z-score). To convert the scores to t-score you will use the compute tool again.
   • To do this, in the top menu click on Transform, then Compute.
   • A compute variable box will appear, where you can type in a formula for the program to calculate.
   • In the target variable box, enter the t-score1.
   • In the numeric expression box, enter the t-score equation 50+(10*ZA_1) and use each appropriate z-score for each assignment. You also need a total t-score (tot_tscore) for each student.
   • Use Transform, then Compute.
   • Enter (tot_tscore) as the target variable and insert a formula in the Numeric Expression window to sum the four t-scores.
     

Use the data from four science assignments provided in Table 2. Table 2 Data from four science assignments Student A1 A2 A3 A4 1 97 28 89 9 2 94 86 80 39 3 95 80 82 10 4 97 39 83 14 96 60 87 38 95 42 84 34 7 94 38 85 31 95 60 85 21 9 98 62 84 12 10 96 51 83 20 11 96 53 86 38 12 98 32 85 27