Illustrationand Economics at a certain examination.Mean marks in StatisticsThe following data, based on 450 students, are given for marks in Statistics40Mean marks in Economics48S. D. of marks in Statistics12The variance of marks in Economics256

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Answered: Illustration and Economics at a certain…

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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Compare the population variance to the mean of the sample variances. Choose the correct answer below. A. The population variance is equal to the square root of the mean of the sample variances. B. The population variance is equal to the mean of the sample variances. C. The population variance is equal to the square of the mean of the sample variances.
The ages (in years) of a random sample of shoppers at a gaming store are shown. Determine the range, mean, variance, and standard deviation of the sample data set. 12, 20, 23, 14, 18, 18, 19, 18, 15, 19 1) The range is ______ 2) The mean is ______ 3) The variance is ________
what test is applicable in this situation
Examples on how to compute for the range, variance, expected value, standard deviation and coefficient variation.
Question: Can you give an example of variable for which the mean would not be appropriate to describe the data (that is, tell me a circumstance in which you would not want to use the mean to describe a dataset).
O Macmillan Learning The domestic cat, Felis catus, is a domesticated furry creature often kept as a pet in many countries. Suppose a volunteer at a local animal shelter wanted to find out a little more about the cats in her care. The volunteer carefully measured the height for the 10 fully grown adult cats at her shelter. The height measurements were taken from the base of the foreleg to the shoulder. The table shows the results of the measurements. Calculate the mean, variance, and standard deviations for cat height for the sample of shelter cats. Report all your answers to two decimal points. mean: variance: standard deviation: in in² in Sample 1 2 3 4 5 6 7 8 9 10 Height (in) 10.5 13 7.7 7.5 9.55 10.5 10.85 12.3 8.15 7.85
64 34 34 50 41 56 64 xᵢ 54 40 42 61 63 64 35 40 32 47 45 56 One of the observations (xᵢ) is left blank. The sample mean is x̅ = 47.25 Find the missing number. 31 The sample variance is_________. a 150.758 b 157.039 c 163.583 d 170.399
Can someone help me out with these questions.
Please answer correctly this 1,2, and 3 questions thank you so much pal!
Sample grade point averages for ten male students and ten female students are listed. Find the coefficient of variation for each of the two data sets. Then compare the results. Males 2.3 3.8 3.9 3.7 2.6 2.4 3.6 3.2 3.9 1.8 Females 2.7 3.6 2.2 3.9 3.7 4.2 1.9 3.9 3.6 2.1 ... The coefficient of variation for males is %. (Round to one decimal place as needed.) The coefficient of variation for females is %. (Round to one decimal place as needed.) Compare the variability of grade point averages of males and females. Choose the correct answer below. O A. The grade point averages of females and males have the same variation. O B. The grade point averages of males are more variable than females. O C. The grade point averages of females and males do not vary. O D. The grade point averages of females are more variable than males.
Exercise 03.38 Algo (Measures Question 14 of 20 of Distribution Shape, Relative Location, and Detecting Outliers) Suppose the data have a bell-shaped distribution with a mean of 50 and a standard deviation of 5. Use the empirical rule to determine the percentage of data within each of the following ranges: a. 40 to 60- Select your answer - b. 35 to 65 - Select your answer - ✓ c. 45 to 55 - Select your answer -
what the answer

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Illustration and Economics at a certain examination. Mean marks in Statistics The following data, based on 450 students, are given for marks in Statistics 40 Mean marks in Economics 48 S. D. of marks in Statistics 12 The variance of marks in Economics 256