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- 1. Multiple ChoiceA frequency distributionis a way to present data visually in a tabledepicts a correlation between two variables using a histiogramis the same thing as a scattergramtypically lists the frequency of each score on the horizontal axix
- 2. Multiple ChoiceYour psychology professor wants to organize and summarize the scores on the first psychology test; which type of statistics is your professor most likely to use?descriptive statisticsinferential statisticscorrelational statisticssignificant statistics
- 3. Multiple ChoiceYou psychology professor wants to describe the average score on your first psychology test. Which measure of central tendency is your professor most likely to use?meanmedianmodeharmonic mean
- 4. Multiple ChoiceWhich measure of central tendency is obtained by adding all the scores and dividing that total by the number of scores?modemedianmeanrange
- 5. Multiple ChoiceScores pile up at the low end of the scale ina negatively skewed distributiona positively skewed distributionany skewed distributiona normal distribution
- 6. Multiple ChoiceThe marketing agent for a professional sports franchise conducts a survey asking people how much they support the construction of a new sports stadium. Almost everyone who takes part in the survey indicates they are strongly in favor of a new stadium; there are just a few respondents who think a new stadium would be a bad idea. When the results from the survey are plotted in a histogram, the distribution will bepositively skewedsymmetricalimpossible to predict without more informationnegatively skewed
- 7. Multiple ChoiceDr. Kleiman gives an exam where most of the students receive failing grades and only a few students receive high scores. When the exam scores are plotted, the distribution will bepositively skewednegatively skewedsymmetricalimpossible to predict without more information
- 8. Multiple ChoiceIn a strongly skewed distribution, the best indicator of central tendency is usually themeanmedianmodestandard deviation
- 9. Multiple Choice
When scores are "bunched up"in the center of a distribution, the
mean will be relatively low
standard deviation will be relatively low
correlation coefficiaent will be a negative number
standard deviation will be relatively high
- 10. Multiple ChoiceThe standard deviationindicates the average difference between each score in a group and the mean for that group of scoresreveals the degree of skew for a a group of scoresis sensitive to scores at the extremes of a distribution of scoresis used to determine whether a data set is positively or negatively skewed
- 11. Multiple ChoiceThe symmetric, bell shaped curve that represents the pattern in which many human characteristics are dispersed in the population is known asscatter plotnormal distributionfrequency polygonhistogram
- 12. Multiple ChoiceJulia has an IQ of 130. If the mean for IQ is 100 with a standard deviation of 15, what percentage of the population has an IQ greater that Julia's (assume a normal distribution)?0 percent2.5 percent32 percent50 percent
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