GENDER REPEAT ENGL ENGGS OCPROB DROPOUT ADDSC IQ GPA

1.00 1.00 2.00 3.00 0.00 0.00 41.33 111.00 2.60

1.00 1.00 2.00 3.00 0.00 0.00 47.33 102.00 2.75

1.00 1.00 2.00 4.00 0.00 0.00 47.67 108.00 4.00

1.00 1.00 2.00 2.00 0.00 0.00 61.33 109.00 2.25

1.00 0.00 2.00 3.00 0.00 0.00 35.33 118.00 3.00

1.00 1.00 2.00 1.00 0.00 0.00 61.33 79.00 1.67

1.00 0.00 2.00 2.00 0.00 1.00 59.67 88.00 2.25

1.00 0.00 2.00 2.00 1.00 0.00 42.33 102.00 3.40

1.00 0.00 2.00 2.00 1.00 0.00 49.67 100.00 2.50

1.00 0.00 2.00 4.00 0.00 0.00 49.67 105.00 1.33

• Pick two of the three continuous variables (ADDC, IQ, or GPA) to calculate the three measures of central tendencymean, median, and mode.
• Identify when these should be used and identify the advantages and disadvantages of each.
• Calculate the variance and standard deviation in the ADDSC. Explain how variability can help you understand data.