QUESTION 7 Select the CORRECT statements. It is usually a good idea to have less than 4 classes in a frequency table (or a histogram). Given a normal (bell-shaped) distribution with the mean of 12 and the standard deviation of 4, five percent of observations will be above 20. The coefficient of variation is equal to 66.67% when the mean is 8 and the standard deviation is 12. Given the variance of 5.78, the standard deviation is 2.4. Car speed is an example of a quantitative variable. QUESTION 8 John began analysing the data he has just obtained. His first step was to find the mean and the variance. The mean was 4164 and the variance was 5262. Then he also found the minimum value in the dataset, which appeared to be 343. The maximum value appeared to be 9189. What was the coefficient of variation (coefficient of variability)? Give your answer as % with two decimal places. For example for 0.4521 type 45.21. Do not type the symbol % with your answer. QUESTION 9 A dataset has mean 558.22, standard deviation 185.33, and the following quartiles: 1st quartile 129.22, 2nd quartile 534.33 and 3rd quartile 703.19. Jaspreet decided to divide Interquartile Range by the median. What will be her result? Round your answer to 4 dec laces.
QUESTION 7 Select the CORRECT statements. It is usually a good idea to have less than 4 classes in a frequency table (or a histogram). Given a normal (bell-shaped) distribution with the mean of 12 and the standard deviation of 4, five percent of observations will be above 20. The coefficient of variation is equal to 66.67% when the mean is 8 and the standard deviation is 12. Given the variance of 5.78, the standard deviation is 2.4. Car speed is an example of a quantitative variable. QUESTION 8 John began analysing the data he has just obtained. His first step was to find the mean and the variance. The mean was 4164 and the variance was 5262. Then he also found the minimum value in the dataset, which appeared to be 343. The maximum value appeared to be 9189. What was the coefficient of variation (coefficient of variability)? Give your answer as % with two decimal places. For example for 0.4521 type 45.21. Do not type the symbol % with your answer. QUESTION 9 A dataset has mean 558.22, standard deviation 185.33, and the following quartiles: 1st quartile 129.22, 2nd quartile 534.33 and 3rd quartile 703.19. Jaspreet decided to divide Interquartile Range by the median. What will be her result? Round your answer to 4 dec laces.
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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Transcribed Image Text:QUESTION 7
Select the CORRECT statements.
It is usually a good idea to have less than 4 classes in a frequency table (or a histogram).
Given a normal (bell-shaped) distribution with the mean of 12 and the standard deviation of 4, five percent of observations will be above 20.
The coefficient of variation is equal to 66.67% when the mean is 8 and the standard deviation is 12.
Given the variance of 5.78, the standard deviation is 2.4.
Car speed is an example of a quantitative variable.
QUESTION 8
John began analysing the data he has just obtained. His first step was to find the mean and the variance. The mean was 4164 and the variance was 5262. Then he also found the minimum value in
the dataset, which appeared to be 343. The maximum value appeared to be 9189. What was the coefficient of variation (coefficient of variability)?
Give your answer as % with two decimal places. For example for 0.4521 type 45.21. Do not type the symbol % with your answer.
QUESTION 9
A dataset has mean 558.22, standard deviation 185.33, and the following quartiles: 1st quartile 129.22, 2nd quartile 534.33 and 3rd quartile 703.19. Jaspreet decided to divide Interquartile Range by
the median. What will be her result?
Round your answer to 4 decimal places.
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