Quarts ofSoft DrinkFrequency0 - 344 - 758 - 11612 - 15316 - 192a.Construct a relative frequency distribution.b.Construct a cumulative frequency distribution.c.Construct a cumulative relative frequency distribution.ANS:a.b.c.CumulativeQuarts ofRelativeCumulativeRelativeSoft DrinksFrequencyFrequencyFrequencyFrequency0 - 440.2040.204 - 850.2590.458 - 1260.30150.7512 - 1630.15180.9016 - 2020.10201.00
Total201.009.The grades of 10 students on their first management test are shown below.94619666926875858478a.Construct a frequency distribution. Let the first class be 60 - 69.b.Construct a cumulative frequency distribution.c.Construct a relative frequency distribution.ANS:a.b.c.CumulativeRelativeClassFrequencyFrequencyFrequency60 - 69330.370 - 79250.280 - 89270.290 - 993100.3Total101.010.There are 800 students in the School of Business Administration. There are four majors in the School: Accounting, Finance, Management, and Marketing. The following shows the number of students in each major.MajorNumber of StudentsAccounting240Finance160Management320Marketing80Develop a percent frequency distribution and construct a bar chart and a pie chart.ANS:MajorPercent FrequencyAccounting30%Finance20%Management40%Marketing10%
11.You are given the following data on the ages of employees at a company. Construct a stem-and-leaf display.2632284558524436422741535548324244403637ANS:2 | 6783 | 226674 | 012244585 | 235812.Construct a stem-and-leaf display for the following data.1252513747403826573149434519363244482218ANS:
1 | 2892 | 263 | 126784 | 03457895 | 12713.The SAT scores of a sample of business school students and their genders are shown below.SAT ScoresGenderLess than 2020 up to 2525 and moreTotalFemale2416848240Male409624160Total6426472400a.How many students scored less than 20?b.How many students were female?c.Of the male students, how many scored 25 or more?d.Compute row percentages and comment on any relationship that may exist between SAT scoresand gender of the individuals.e.Compute column percentages.ANS:a.64b.240c.24d.SAT ScoresGenderLess than 2020 up to 2525 and moreTotalFemale10%70%20%100%Male25%60%15%100%From the above percentages it can be noted that the largest percentages of both genders' SAT scores are in the 20 to 25 range. However, 70% of females and only 60% of males have SAT scores in this range. Also it can be noted that 10% of females' SAT scores are under 20, whereas, 25% of males' SAT scores fall in this category.e.SAT ScoresGenderLess than 2020 up to 2525 and moreFemale37.5%63.6%66.7%Male62.5%36.4%33.3%Total100%100%100%14.For the following observations, plot a scatter diagram and indicate what kind of relationship (if any) exist between x and y.
xy2761939517411ANS:A positive relationship between x and y appears to exist.
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