Concept explainers
Constructing Frequency Distributions. In Exercises 11–18, use the indicated data to construct the frequency distribution. (The data for Exercises 13–16 can be downloaded at TriolaStats.com.)
13. Burger King Lunch Service Times Refer to Data Set 25 “Fast Food” and use the drive-through service times for Burger King lunches. Begin with a lower class limit of 70 seconds and use a class width of 40 seconds.
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Chapter 2 Solutions
ESSENTIALS OF STATISTICS 6TH ED W/MYSTA
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- Pls help ASAP.arrow_forwardfind range and midrange of data 1,17,68,25,35,45,13,28,98,45,99,25,14,18,25,14,65,75,85,41,25,9,25,36,68,82,46,37.arrow_forwardUse Excel2. The monthly issues of the Journal of Finance are available on the Internet. The table below shows the number of times an issue was downloaded over the last 33 months. Suppose you wish to summarize the number of downloads with a frequency distribution. 312 2,753 2,595 6,057 7,624 6,624 6,362 6,575 7,760 7,085 7,272 5,967 5,256 6,160 6,238 6,709 7,193 5,631 6,490 6,682 7,829 7,091 6,871 6,230 7,253 5,507 5,676 6,974 6,915 4,999 5,689 6,143 7,086 a. Find the mean, median, mode, minimum and maximum values as well as variance, standard deviation, range, b. find Q1,Q2,Q3 and if there are any outliers c. Find the 35th percentile and the 90th percentile of the dataarrow_forward
- The frequency distribution shown in the figure lists the annual salaries of the managers at Universal Manufacturing of Melonville. Construct a histogram to represent the data.arrow_forwardUsing the data in Table 6–11, calculate a 3-month moving average forecast for month 12.arrow_forwardAn environmental organization releases an annual beach report card based on water quality. The grades for 20 beaches in three counties in a certain state during dry weather are given below. B A+ F A+ F C A+ A+ A+ A+ A+ B A+ B A+ C C A A+ A Summarize the dry weather grades by constructing a relative frequency distribution.arrow_forward
- During one shift, the express lane clerk recorded how many times customers violated the "10 items or less" rule for his lane. In particular, he recorded how many items over the limit each violator placed on the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually represents "7 or more items," not just 7 items. Frequency SHIFT 14- 12 10- 8- 6 CAPS 0.5 1.5 2.5 3.5 4.5 5.5 5.5 6.5 7.5 #items over 10 Q What is the frequency of times the limit was exceeded by at least 2 items? 38°F Clear 4 ans 2H TAB 61 Check Answer ESC ! F1 ! Q A Z BEBEEEE F2 X 2 W S F3 # * 3 Q Search X E F4 LA 4 F5 с % R 5 LLI F6 T V 6 HCO F7 1111 4+ 7 Y F8 G H * 00 с F9 J B Narrow_forward30 23 58 28 35 67 27 42 46 35 51 30 18 33 25 38 48 36 31 39 a. Construct a grouped frequency distribution table using an interval width of 10. Include columns for frequency, percentage, cumulative frequency, and cumulative percentage. b. Construct a stem and leaf display.arrow_forwardDuring one shift, the express lane clerk recorded how many times customers violated the "10 items or less" rule for his lane. In particular, he recorded how many items over the limit each violator placed on the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually represents "7 or more items," not just 7 items.What is the frequency of times the limit was exceeded by more than 5 items?arrow_forward
- Construct one table that includes relative frequencies based on the frequency distributions shown below, then compare the amounts of tar in nonfiltered and filtered cigarettes. Do the cigarette filters appear to be effective? (Hint: The filters reduce the amount of tar ingested by the smoker.) Click the icon to view the frequency distributions. Complete the relative frequency table below. Relative Relative Tar (mg) (Nonfiltered) (Filtered) 6-9 % % 10-13 % % if 14-17 % % 18-21 % % 22-25 % % 26-29 1% % % % Frequency Frequency 30-33 (Simplify your answers.) Do cigarette filters appear to be effective? O A. Yes, because the relative frequency of the higher tar classes is greater for nonfiltered cigarettes. O B. No, because the relative frequencies for each are not substantially different. O C. No, because the relative frequency of the higher tar classes is greater for filtered cigarettes. O D. This cannot be determined. Frequency Distributions Tar (mg) in Nonfiltered Cigarettes Frequency…arrow_forwarda flute instructor examined student progressarrow_forwardGiven the range, class intervals, class interval size and first class interval, construct afrequency distribution table out of the data below. Write your solutions on a sheet of paper or edit thisform and fill your answers.arrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL