The mean and standard deviation marks of 4 different classes of the same grade are recordedin the table below.Mean mark Standard deviationClass 1Class 2Class 38397857114Class 4645Using the coefficient of variation, determine which class has marks that more spread out aboutthe mean.A. Class 1B. Class 2C. Class 3D. Class 4

Given : Mean mark Standard deviation Class 1 83 9 Class 2 78 5 Class 3 71 14 Class 4 64…

Answered: The mean and standard deviation marks…

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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The mass of a whiffle ball varies, usually between 40 and 50 grams. You decide to gather a random sample of whiffle balls and record the mass of each. Your data is displayed in the table below. (Units are grams.) 37.9 50.3 42.5 45.4 47.7 44.1 44,4 47.4 45.9 44.9 45.3 45.6 43.1 44.4 47.6 47.8 47.4 42.2 Checksum: 813.9 You would like to describe a "typical" whiffle ball from your data set. You decide to make several calculations describing the "center" of the data set. Find the following: a) mean b) median c) midrange d) 10% trimmed mean e) Which measure of center do you think best describes this data set. Briefly explain your choice. 9Type here to search FI 2 C F3 F4 F5 F6 *- F11 F7 F8 F9 F10 %23 & * 3 4. 6. 8. 9. Y G 5 LL %24
Cumulative Review 9. The list shows the number of text messages 5 students sent on Tuesday. 15, 45, 70, 30, 120 What is the mean absolute deviation of the 5 text messages? A. 31.2 C. 54 B. 57 D. 1.2
Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 51.1 miles per hour. Speed (miles per hour) Frequency 42-45 23 The mean of the frequency distribution is (Round to the nearest tenth as needed.) 46 - 49 15 miles per hour. 50-53 54-57 58-61 6 4 Which of the following best discribes the relationship between the computed mean and the actual mean? O A. The computed mean is not close to the actual mean because the difference between the means is less than 5%. OB. The computed mean is close to the actual mean because the difference between the means is more than 5%. O C. The computed mean is close to the actual mean because the difference between the means is less than 5%. O D. The computed mean is not close to the actual mean because the difference between the means is more than 5%.
Find the standard deviation for the group of data items. 5, 6, 7, 7, 8, 9 The standard deviation is (Simplify your answer. Round to two decimal places as needed.)
Length data for mussels collected at three different depths in dry lake. Calculate the mean and standard deviation for the mussels length data from each depth graph the men length and stander deviation for these data
n The gas mileages (in miles per gallon) for 26 cars are shown in the frequency distribution. Approximate the mean of the frequency distribution. Gas Mileage (in miles per gallon) Frequency 8 29-32 33-36 13 37-40 1 41-44 4 ... The approximate mean of the frequency distribution is (Round to one decimal place as needed.)
I need the mean, mode, and median
Find the mean for the set of grouped data. The mean is (Round to two decimal places if needed.) Interval 0.5-2.5 2.5-4.5 4.5-6.5 6.5-8.5 Frequency 1 8 5 1
The numbers of courses taught per semester by a random sample of university professors are shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. 25- 24 20- 17 16 15 10- 5- Number of courses taught per semester f 1 2 16 24 4 17 The sample mean is x = 2.9 (Round to one decimal place as needed.) The sample standard deviation is s = (Round to one decimal place as needed.) Number of professors
K A data set lists weights (lb) of plastic discarded by households. The highest weight is 5.26 lb, the mean of all of the weights is x=2.312 lb, and the standard deviation of the weights is s = 1.118 lb. a. What is the difference between the weight of 5.26 lb and the mean of the weights? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the weight of 5.26 lb to a z score. d. If we consider weights that convert to z scores between 2 and 2 to be neither significantly low nor significantly high, is the weight of 5.26 lb significant? a. The difference islb. (Type an integer or a decimal. Do not round.) View an example Get more help. ... Clear all Check answer Incor

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