Given the data from 24 daily observations for the number of miles driven by RonnieRoadrunner on his job as a traveling salesman:100.3122.7117.7121.9101.198.9130.7125.793.4127.3115.3122.3112.0119.1105.598.1Construct a frequency table with six classes and calculate:i. Modeii.Medianiii.Meaniv. Variance and Standard Deviation129.7120.199.497.2101.397.3109.195.3

The question is about frequency distribution Given : To find : Construct freq. table and…

Answered: Given the data from 24 daily…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A semiconductor manufacturer produces devices used as central processing units in personal computers. The speed of the devices (in megahertz) is important because it determines the price that the manufacturer can charge for the devices. The following table contains measurements on 120 devices. a. Calculate the sample mean, sample variance, and standard deviation. b. Find the median and quartiles for the data. c. Construct a box plot of the data. Find the interquartile range and determine the number of outliers
Given the following data set: 24; 32; 27; 22; 35; 18; 29; 25; 22. Calculate the coefficient of variation to measure how large the standard deviation is relative to the mean.
Suppose that a polling company surveyed 600 people about how much time they spend watching television each day. The results of this survey were compiled and used to create this relative frequency histogram. Assume that all percentages shown in the histogram are whole numbers. Each of the bars in this histogram includes only the left endpoint of the class except for the last bar, which also includes the right endpoint. What percentage of respondents said that they watch television at least six hours per day? How many respondents said that they watch television between three and five hours per day?
Grades 50-60 60-70 70-80 80-90 90-100 No. of Students 9. Calculate the standard deviation of the sample grouped data above.
The Department of Motor Vehicles office tried a new customer service system after people complained they were wasting too much time waiting in line. Use the two relative frequency histograms to answer the following questions. Waiting Times at the DMV (OLD SYSTEM) Waiting Times at the DMV (NEW SYSTEM) 50 8 40- 8 Percent 8 10 0 0 5 10 15 20 Time Waited OLD (in minutes) 8% 60% 50% 25 30 Percent 50 40 8 O 10 0 0 T 20 15 Time Waited (in minutes) 5 10 25 30 About what percent of customers waited fewer than 10 minutes under the old system?
4. Use Descriptive Statistic tool on the Data Analysis to find the following: а. Мean b. Mode C. Median d. Standard Deviation e. Variance f. Range g. Skewness Table: 88 62 63 88 65 85 83 76 72 63 60 46 85 71 67 75 78 87 70 42 63 90 63 60 73 55 62 62 83 79 78 40 51 56 80 90 47 48 54 77 86 55 76 52 76 40 52 72 43 60
C. An agricultural researcher wants to compare the mean numbers of pods between three plot types (Liberty, No Till and Chisel Plowed). For each plot type, he records 7 measurements of the number of pods. Liberty 37 31 36 35 43 37 38 No Till 34 30 38 27 40 42 39 Chisel Plowed 32 37 24 23 32 34 36 Using a 0.05 level of significance, test the hypothesis that the actual mean numbers of pods are equal across the three plot types.
A graduating class reported starting salaries represented on the following frequency table. Number of students Starting Salary ($) 10 15,000 17 20,000 25 25,000 38 30,000 27 35,000 21 40,000 45,000 For the data in the table above, what is the MEAN?
Suppose we want to know the mean number of shurikens thrown each night by ninjas in Konoha village. Getting this information from every ninja in the village would take forever. Instead, we randomly select 20 ninjas from the ninja school that is closest to us. a. Identify the population of interest in this survey b. Describe the parameter of interest in this survey. c. Identify the sample of interest in this survey.
2) in a spot speed study for a highway section, the data were collected and shown in the table below. Determine the arithmetic mean speed, stander deviation, the limit of pace, median speed, speed limit and design speed. Speed group(Kph) vehicles No. of in group 32.5-37.4 37.5-42.4 42.5-47.4 15 30 47.5-52.4 52.5-57.4 60 35 57.5-62.4 10
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The following data represents home sale amounts for a sample of homes in Alameda, CA that were sold in a particular month (1000s of $): 350 408 540 555 575 590 608 679 815 1285 (a) Find the mean, median, and mode ( if no mode enter NONE ) for this data using your calculator. Round your answers to one decimal digit [Hint: Enter data in a list and use STAT>CALC>1-Var Stat]

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