1. Using the data to the right, if you made a grouped-frequency table using equal-sized intervals from the beginning with multiples of 4, which interval would have the lowest frequency? [-3 0-3 CD's 4-7 CD's 8-11 CD's . Two intervals are equal. non-9: 2. You conduct a survey asking students how many DVD's they own. The results are shown in the histogram on the right. How many students own 16-20 DVD's? a 20 a. 16 b. 18 u c. 20 \" d. 29 ' 1-5 6-10 11-15 16-20 3. The histogram below shows the number of novels students own based on a survey. Which of the following statements is true? a. The number of students owning 3 novels must be greater than the number of students owning 10 novels. b. The number of students owning 12 novels must be great than the number of students owning 2 novels. u c. More than half of the students surveyed own 1-8 novels. an d. None of the above are true. 5 1-4 5-3 Q-I? 'vl I7-7 4. If the size of a histogram's intervals is increased and its scale remains the same, which of the following statements will be true? The height of the bars will decrease. The total number of bars will decrease. The width of the bars will decrease. Each bar will represent fewer data items than before. 219 51's" A set of ve different whole numbers are arranged in order from smallest to largest. The first and last numbers are decreased by one. which measure of spread for the set could this change? a. The range. c. The standard deviation. b. The median. d. All ofthe above. A student used a measure of spread to conclude that the movie ticket prices (in dollars) in set A were more spread out than those in set B. Which measure of spread did he use? Set A: 10, 11, 11, 13, 15 Set B: 10, 11, 13, 13, 15 The range. The IQR. The standard deviation. None of the above. All of the above. peeve Describe the shape of the distribution given by the frequency distribution table below: Score 10 20 30 40 50 Frequency 177 2308 5698 12549 29786 U-shaped skewed left u n iform skewed right none of these 9519?? 8. A set of data is normally distributed with a mean of 100 and standard deviation of 25. Approximately what percent of the data would you expect to be between 75 and 100? 48 % 16 96 50 % 34 % none of the above EDP-09'5" 9. The cumulative frequency of the 3rd bin in a frequency distribution table represents: the cumulative deviation of the 3rd bin in percent the relative proportion of data that is within 2 standard deviations of the mean the percentage of data that falls into the 3rd bin the frequency of data values that are larger than the minimum value of the 3rd bin the number of data values that are less than the maximum value of the 3rd bin 99-9375\" 10. If X "' N(350, 41) then the standard deviation equals 16 350 4 256 None of the above Sheep's" 11. The standard deviation of a sample of data is 4. The variance of this sample is: 16 4 2 256 None of the above 99-95:"? Please put all your answers for the multiple choice questions in the respective box below