PT1 - Practice for Test 1 An excerpt from a data set is...

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An excerpt from a data set is given below. The variables are, obs, a number assigned to participants in the study sequentially as they are admitted, gpa, the grade point average of the participant, iq, score from a standard test, gender (2 for male, 1 for female) and concept, a score assigned from a psychological test. obs gpa iq gender concept 1 7.94 111 2 67 2 8.292 107 2 43 3 4.643 100 2 52 4 7.47 107 2 66 5 8.882 114 1 58 1. Identify each as categorical or quantitative. a. obs b. gpa c. iq d. gender e. concept 2. Which variables if any might be considered as ordinal? A stemplot for self concept is given below. The counts are cumulative as you work your way either up or down toward the median. Count Stem (10’s) Leaf (1’s) 3 2 018 8 3 05679 17 4 023446799 39 5 1111223344444556668899 39 6 0000123334444455666677777899 11 7 0000111223 1 8 0 3. What is the median score for this group? 4.
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This note was uploaded on 04/04/2008 for the course MATH 283 taught by Professor Brown during the Spring '08 term at NMT.

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PT1 - Practice for Test 1 An excerpt from a data set is...

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