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Review of attempt 1
Started on | Friday, 2 March 2012, 03:01 PM |
Completed on | Friday, 2 March 2012, 03:37 PM |
Time taken | 35 mins 54 secs |
Grade | 14 out of a maximum of 15 (93%) |
Question1
Marks: 1
Dr. V wanted to test her hypothesis that sugar improves memory, so she gave one group of participants candy sweetened with sugar and another group candy sweetened with NutraSweet. Then she compared the performance of the two groups on a test of recognition memory. Dr. V's research method is
Choose one answer.
| a. naturalistic  | |
| b. descriptive  | |
| c. dependent  | |
| d. experimental  | |
Correct
Marks for this submission: 1/1.
Question2
Marks: 1
A measure of central tendency:
Choose one answer.
| a. reveals the typical score in a set of data.  | |
| b. describes relations between sets of data.  | |
| c. describes the variability of a set of data.  | |
| d. conclusively compares means of a set of data.  | |
Correct
Marks for this submission: 1/1.
Question3
Marks: 1
Mario tested the relationship between violence and population density. He found a correlation coefficient of –0.75. What can you conclude?
Choose one answer.
| a. A higher population density causes more violence.  | |
| b. A higher population density is associated with more violence.  | |
| c. Population density and violence are not related.  | |
| d. A higher population density is associated with less violence.  | |
Correct
Marks for this submission: 1/1.
Question4
Marks: 1
P.W. Herman wanted to know whether consumption of alcoholic beverages affected peoples' bicycling abilities. He suggested the alcohol itself didn't have any negative effects, but people who drank alcohol expected to have their riding abilities impaired so they "acted drunk." To control for the participants' expectations, P.W. gave half of his sample vodka and the other half of his sample vodka-flavored water. P.W. used the __________  research...