Mr. Rogers - AP Statistics Objectives

 Lesson Plan Practice Test Practice Test Answers
 AP Statistics Delightful Distributions Practice Test 1 ) If a distribution is skewed to the high side, what is the relationship between the median and the mean? 2 ) Draw a distribution which is skewed to the right. 3 ) Name 3 measures of central tendency. 4 ) Give one example of a distribution which would likely be skewed to the right. 5 ) Which of the following is true for a symmetrical distribution? a) It can have several peaks   b) mean = median   c) both answers a and b    d) none of the answers 6 ) If the standard deviation of a data set is 4, what is a reasonable range? 7 ) If the standard deviation of a data set = 0, you can conclude __________________. 8 ) When a data set contains an outlier, which measure of variability is affected the least? 9 ) About how much data is typically found in the interquartile range? 10 ) Which plot will always consistently identify outliers regardless of who makes the plot? 11 ) Which plot could be used for categorical data? 12 ) What can a stem and leaf plot can detect ? 13 ) What is the relationship between the variance (var) and the standard deviation (std dev)? 14 ) When a data set has suspected outliers, what are the preferred measures of central tendency and variability? 15 ) What are the five numbers in a five number summary? 16 ) Write formulas for the following: standard deviation of a sample variance of a sample standard deviation of a population (hint: Zeus knows all about populations) variance of a population 17 ) If you add 20 to all your data points what does it do to the mean, median, standard deviation and IQR? 18 ) If you multiply all your data points by 2 what does it do to the mean, median, standard deviation and IQR? 19 ) What does it mean to say that your IQ is in the 95 percentile? 20 ) Given the following 5 number summary: 1, 3, 5,7, 12 determine the following describe the shape median = determine if there are outliers range = IQR = estimate sigma: 75 percentile = 3 is what percentile?
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