# Researchers often prefer to report cumulative

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Researchers often prefer to report cumulative percents from the bottom up to explainhow certain scores rank at or below other scores in a distribution. What is this type of
Below is the number of times a commercial was shown displaying high fat, high sugarfoods during children's programming over each of 20 days.
11, 12, 6, 16, 3, 9, 14, 17, 21, 8,8, 11, 18, 19, 12, 10, 21, 5, 7, 22(a) Create a simple frequency distribution for these grouped data with four intervals.(b) Which interval had the largest frequency?=========(a)Interval18-2213-178-123-7Frequency5384(b) Interval: 8-12The upper boundaries for a distribution of waiting times (in seconds) in a grocery storeaisle are 44, 56, 68, and 80. List the value for each lower boundary in thisdistribution.=========Lower Boundary69574533A researcher records the number of dreams that 50 college freshman students recalledduring the night prior to a final exam._____________________________________Number of dreams43210Cumulative Frequency504229207_________________________________(a) Convert this table to a percentile rank distribution.(b) What is the number of dreams at the 58th percentile?=========(a) Percentile Rank10084584014(b) 2 dreams
Organize the following data into a stem-and-leaf display where the following is true.(Enter numbers from smallest to largest separated by spaces. Enter NONE for stemswith no values.)244, 119, 114, 243, 249, 247, 112, 174, 242, 179248, 174, 179, 118, 241, 115, 110,178, 173, 175(a) the stem has one digit=========(a)Stem | Leaf1 | 10 12 14 15 18 19 73 74 74 75 78 79 792 | 41 42 43 44 47 48 49(b)Stem | Leaf11 | 0 2 4 5 8 917 | 3 4 4 5 8 9 924 | 1 2 3 4 7 8 9The following is an incomplete simple frequency distribution table for the number ofmistakes made during a series of military combat readiness training exercises._____________________________________Number of Mistakes6 - AB - 50 - 2Frequency24CN = 19Find the missing values for A, B, and C.=========A = 8B = 3C = 13The following bar graph summarizes the number of nights per week a sample of collegestudents spent studying.(a) How many students were observed in this study? (Enter an exact number.)(b) How many students studied 3 nights per week? (Enter an exact number.)(c) How many students studied at least 3 nights per week? (Enter an exactnumber.)=========(a) 35 students(b) 6 students(c) 14 studentsKeith Rollag (2007) noticed that coworkers evaluate and treat "new" employeesdifferently from other staff members. He was interested in how long a new employee isconsidered "new" in an organization. He surveyed four organizations ranging in size

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Term
Fall
Professor
Kemphaus
Tags
researcher