AP Psych - Stat 2 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) mean B) mode C) frequency D) median 1) 2) The mean of a set of numbers 5, 5, 6, 6, 10, 10 is. A) 8 B) 5 C) 6 D) 7 2) 3) Which of the following is NOT a measure of central tendency? A) range B) median C) mean D) mode 3) 4) A pattern of dots plotting two characteristics is called a. A) frequency polygon B) dot graph C) frequency histogram D) scatter plot 4) 5) Correlations causality. A) estimate B) if 0, indicate C) predict D) do not indicate 5) 6) A scatter plot is used to determine. A) significance level B) correlation C) mean 6) 7) For the numbers 17, 2, 9, 12, 15, the range is. A) 9 B) 17 C) 12 D) 15 7) 8) The simplest measure of variation is the. A) standard deviation B) mean C) significance D) range 8) 9) The difference between the highest and the lowest scores is the. A) range B) standard deviation C) mode 9) 10) For the numbers 100, 90, 80, 60, the range is. A) 40 B) 100 C) 80 D) 50 10) 11) Which number tells us the MOST about how the scores in a frequency distribution are dispersed around the mean? A) probability ratio B) range C) standard deviation 11) 04/19/2012 1
12) To find the standard deviation, we must first find the. A) mode B) mean C) range D) correlation coefficient 12) 13) Probabilities are used to express the. A) mode B) significance level C) variance D) mean 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) random B) biased C) stratified D) representative 14) 15) The research method used by Jean Piaget in developing his comprehensive theory of cognitive development was the method. A) case study B) psychometric C) experimental D) naturalistic observation 15) 16) Categorizing people according to whether they voted yes or no on a particular issue is an example of a(n) scale. A) nominal B) ordinal C) ratio D) interval 16) 17) Classifying workers in a factory according to whether they are blue-collar or white-collar workers is using a(n) scale. A) ordinal B) interval C) nominal D) labor 17) 18) A scale indicating order or relative position of items according to some criterion is a(n) scale. A) ratio B) interval C) ordinal D) nominal 18) 19) The scale that provides the LEAST information is a(n) scale. A) ratio B) ordinal C) minimal D) nominal 19) 20) A scale that ranks preferences on a continuum from lowest to highest is a(n) scale. A) ordinal B) minimum-maximum C) interval D) nominal 20) 21) 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) ordinal D) interval 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) academic B) nominal C) ratio D) interval 22) 2
23) An IQ test typically rates people according to a(n) scale. A) ordinal B) nominal C) ratio D) interval 23) 24) A scale that tells us about order but nothing about the distances between the quantities that are ordered is a(n) scale. A) ratio B) nominal C) interval D) ordinal 24) 25) A 4-point scale that measures the quality of beef is a(n) scale. A) nominal B) interval C) ordinal D) ratio 25) 26) An IQ test typically rates people according to a(n) scale. A) ordinal B) nominal C) ratio D) interval 26) 27) On a(n) scale, data are ranked from first to last according to some criterion. A) ratio B) interval C) nominal D) ordinal 27) 28) The scores gather at one end of a distribution. A) skewed B) standard C) symmetrical D) normal 28) 29) 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 29) 30) If you know that the median is greater than the mean, you can predict that the. A) frequency polygon will be normal B) curve will be skewed to the left C) mode is more important than the mean D) curve will be skewed to the right 30) 31) If you know that the mean is greater than the median, you can predict that the. A) curve will be skewed to the right B) frequency polygon will be normal C) mode will be equal to the mean D) curve will be skewed to the left 31) 32) We say that a curve is skewed to the left if the. A) highest part of the curve lies on the left B) tail on the left is longer 32) 33) Plotting a normal distribution on a graph yields a. A) skewed curve B) normal octogon C) normal curve D) frequency histogram 33) 34) The normal curve is. A) bimodal B) symmetrical C) always true D) asymmetrical 34) 3
35) If we take a large enough number of measurements of almost any characteristic, the result is MOST likely to be. A) mediated B) skewed C) normal D) bimodal 35) 36) The mean and the mode fall at the same point in distributions. A) bimodal B) flat C) normal D) skewed 36) 37) About 95 percent of scores fall between standard deviation(s) above and below the mean in a normal distribution. A) three B) two C) one D) four 37) 38) About 68 percent of scores fall between standard deviation(s) above and below the mean in a normal distribution. A) two B) four C) three D) one 38) 39) About percent of scores fall between the mean and one standard deviation above and below the mean in a normal distribution. A) 99 B) 34 C) 68 D) 32 39) 40) 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) 0 and 30 C) 12 and 18 D) 6 and 24 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) 4 and 16 B) 6 and 14 C) 8 and 12 D) 9 and 11 41) 42) About percent of scores fall between 3 standard deviations above and 3 standard deviations below the mean in a normal distribution. A) 95 B) 99 C) 96 D) 68 42) 43) Today, psychologists reviewing the literature in a given area of research tend to rely on the method to reach conclusions. A) box score B) relevance C) hunt-and-pick D) meta-analysis 43) 44) 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 relevance technique B) a meta-analysis C) the box score method D) the hunt-and-pick method 44) 45) Traditionally, psychologists reviewing the literature in a particular area of research relied on the method to reach conclusions. A) meta-analysis B) hunt-and-pick C) relevance D) box score 45) 4
Answer Key Testname: AP PSYCH STAT 2 1) A 2) D 3) A 4) D 5) D 6) B 7) D 8) D 9) A 10) A 11) C 12) B 13) B 14) A 15) A 16) A 17) C 18) C 19) D 20) A 21) A 22) B 23) D 24) D 25) C 26) D 27) D 28) A 29) A 30) B 31) A 32) B 33) D 34) B 35) C 36) C 37) B 38) D 39) C 40) D 41) B 42) B 43) D 44) B 45) D 04/19/2012 5