NCU Northcentral University 1. Open the file in SPSS . Then , calculate descriptive statistics (central tendency and variability ) for each of the assignment scores 2. What level of measurement do the data represent (i.e., nominal ordinal , interval , ratio )? 3. What is the mean and standard deviation for each assignment score ? 4. What is the median for each assignment score ? 5. What is the mode for each assignment score ? 6. What is the range for each assignment score ? Part II: a. Your first task is to obtain a total assignment score for each student. To obtain the total score ("totscore"), you will use the compute tool in SPSS. To do this, in the top menu click on Transform, then Compute a. A compute variable box will appear, where you can type in a formula for the program to calculate b. In the target variable box, enter "totscore." Then, click once in the numeric expression box. c. After that, double click on Assignment 1, to move it from the list of variables to the numeric expression box . d. Then click on the + (plus ) sign . e. After that, double click on Assignment 2 and follow the same instructions as Assignment 1 for the rest of the assignments . This new variable is the total sum of the four assignment scores. b. The second step is to calculate a z-score for each of the assignments and the total score a. To create the z-score in SPSS, you will go to analyze , then descriptive statistics , and descriptive b. Include in the window the four assignments and the "totscore" variables. Then check the box on Save Standardized Values as Variables. c. The third step is to convert each of the scores to a t-score . a. The equation to a t-score is 50+ (10*zscore). To convert the scores to t-score you will use the compute tool again b. To do this, in the top menu click on Transform, then Compute C. A compute variable box will appear, where you can type in a formula for the program to calculate d. In the target variable box, enter the tscore1