AP Psych - Stat 1 Name Period Date. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

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1 AP Psych - Stat 1 Name Period Date MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) In a set of incomes in which most people are in the $15,000 through $40,000 range, which measure of central tendency would be MOST disturbed by an income of $1 million? A) mode B) frequency C) median D) mean 1) 2) The mean of a set of numbers 5, 5, 6, 6, 10, 10 is. A) 8 B) 6 C) 9 D) 7 2) 3) Which of the following is NOT a measure of central tendency? A) mode B) median C) mean D) range 3) 4) A pattern of dots plotting two characteristics is called a. A) bar graph B) frequency histogram C) frequency polygon D) scatter plot 4) 5) Correlations causality. A) predict B) do not indicate C) if positive, indicate D) estimate 5) 6) A scatter plot is used to determine. A) correlation B) mean C) significance level 6) 7) The difference between the highest and the lowest scores is the. A) standard deviation B) range C) mode 7) 8) For the numbers 100, 90, 80, 60, the range is. A) 80 B) 40 C) 50 D) 60 8) 9) The simplest measure of variation is the. A) standard deviation B) significance C) mean D) range 9) 10) For the numbers 17, 2, 9, 12, 15, the range is. A) 9 B) 12 C) 15 D) 2 10) 11) To find the standard deviation, we must first find the. A) range B) mode C) median D) mean 11) 12) Which number tells us the MOST about how the scores in a frequency distribution are dispersed around the mean? A) probability ratio B) standard deviation C) range 12) 04/17/2012 1

2 13) Probabilities are used to express the. A) mode B) mean C) variance D) significance level 13) 14) A psychologist, studying pilot trainees, picks the trainees who will be participating in her study by selecting every third name appearing on the list of available trainees. She is selecting a sample A) biased B) random C) representative D) stratified 14) 15) The research method used by Jean Piaget in developing his comprehensive theory of cognitive development was the method. A) psychometric B) case study C) experimental D) naturalistic observation 15) 16) A scale indicating order or relative position of items according to some criterion is a(n) scale. A) nominal B) ratio C) interval D) ordinal 16) 17) Classifying workers in a factory according to whether they are blue-collar or white-collar workers is using a(n) scale. 17) 18) Categorizing people according to whether they voted yes or no on a particular issue is an example of a(n) scale. A) nominal B) ratio C) ordinal D) interval 18) 19) A professor who classifies the students in her classes according to whether or not they are psychology majors is using a(n) scale. A) nominal B) ratio C) interval D) ordinal 19) 20) The scale that provides the LEAST information is a(n) scale. A) ratio B) interval C) nominal D) ordinal 20) 21) A scale that ranks preferences on a continuum from lowest to highest is a(n) scale. A) ordinal B) interval C) ratio D) nominal 21) 22) A professor who classifies the students in her classes according to whether or not they are psychology majors is using a(n) scale. A) ratio B) interval C) ordinal D) nominal 22) 23) An IQ test typically rates people according to a(n) scale. A) nominal B) ordinal C) ratio D) interval 23) 24) A 4-point scale that measures the quality of beef is a(n) scale. A) ordinal B) interval C) nominal D) ratio 24) 2

3 25) A scale that tells us about order but nothing about the distances between the quantities that are ordered is a(n) scale. 25) 26) On a(n) scale, data are ranked from first to last according to some criterion. 26) 27) An IQ test typically rates people according to a(n) scale. A) interval B) ratio C) nominal D) ordinal 27) 28) The scores gather at one end of a distribution. A) symmetrical B) normal C) skewed D) standard 28) 29) If you know that the mean is greater than the median, you can predict that the. A) mode will be equal to the mean B) curve will be skewed to the right C) frequency polygon will be normal D) curve will be skewed to the left 29) 30) If you know that the median is greater than the mean, you can predict that the. A) curve will be skewed to the right B) frequency polygon will be normal C) curve will be skewed to the left D) mode will be equal to the mean 30) 31) We say that a curve is skewed to the left if the. A) tail on the left is longer B) highest part of the curve lies on the left 31) 32) We say that a curve is skewed to the right if the. A) tail on the right is longer B) tail on the left is longer 32) 33) Plotting a normal distribution on a graph yields a. A) frequency histogram B) bar graph C) normal curve D) skewed curve 33) 34) The normal curve is. A) skewed B) bimodal C) symmetrical D) asymmetrical 34) 35) If we take a large enough number of measurements of almost any characteristic, the result is MOST likely to be. A) bimodal B) normal C) mediated D) skewed 35) 36) The mean and the mode fall at the same point in distributions. A) skewed B) flat C) normal D) bimodal 36) 37) A hypothetical bell-shaped distribution curve that occurs when a normal distribution is plotted as a frequency polygon is called a(n) curve. A) anomalous B) normal C) bimodal D) asymmetrical 37) 3

4 38) About 68 percent of scores fall between standard deviation(s) above and below the A) three B) four C) one D) two 38) 39) About 95 percent of scores fall between standard deviation(s) above and below the A) three B) two C) four D) one 39) 40) About percent of scores fall between the mean and one standard deviation above and below the A) 34 B) 32 C) 68 D) 99 40) 41) In a set of test scores, the mean is 10 and the standard deviation is 2. With these two numbers we know that 95% of the scores fall between. A) 9 and 11 B) 4 and 16 C) 6 and 14 D) 8 and 12 41) 42) In a set of survey results, the mean is 15 and the standard deviation is 3. With these numbers we know that 99% of the scores are between. A) 9 and 21 B) 6 and 24 C) 0 and 30 D) 12 and 18 42) 43) About 99 percent of scores fall between standard deviation(s) above and below the A) four B) one C) three D) two 43) 44) About percent of scores fall between 3 standard deviations above and 3 standard deviations below the A) 68 B) 96 C) 95 D) 99 44) 45) About percent of scores fall between 2 standard deviations above and below the mean. A) 99 B) 96 C) 68 D) 95 45) 46) A statistical procedure for combining the results of several studies so the strength, consistency, and direction of the effect can be measured is known as. A) the box score method B) a meta-analysis C) the hunt-and-pick method D) the relevance technique 46) 47) Today, psychologists reviewing the literature in a given area of research tend to rely on the method to reach conclusions. A) relevance B) box score C) meta-analysis D) hunt-and-pick 47) 48) Traditionally, psychologists reviewing the literature in a particular area of research relied on the method to reach conclusions. A) relevance B) hunt-and-pick C) meta-analysis D) box score 48) 4

5 Answer Key Testname: AP PSYCH STAT 1 1) D 2) D 3) D 4) D 5) B 6) A 7) B 8) B 9) D 10) C 11) D 12) B 13) D 14) B 15) B 16) D 17) B 18) A 19) A 20) C 21) A 22) D 23) D 24) A 25) D 26) D 27) A 28) C 29) B 30) C 31) A 32) A 33) A 34) C 35) B 36) C 37) B 38) C 39) B 40) C 41) C 42) B 43) C 44) D 45) D 46) B 47) C 48) D 04/17/2012 5