a. the rangeb. the variancec. the standard deviation Class Interval7-910-1213-1516-1819-21Frequency2814197

The given frequency distribution is Class interval Frequency (f) Mid value (x) fx fx2 7-9 2 8…

Answered: a. the range b. the variance c. the…

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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Internet Service Providers The amount that households pay service providers for access to the Internet varies quite a bit, but the mean monthly fee is $50 and the standard deviation is $20. The distribution is not Normal: many households pay a low rate as part of a bundle with phone or television service, but some pay much more for Internet only or for faster connections. A sample survey asks an SRS of 50 households with Internet access how much they pay. Let x be the mean amount paid. 1. Explain why you can't determine the probability that the amount a randomly selected household pays for access to the Internet exceeds $55. 2. What are the mean and standard deviation of the sampling distribution of x ? 3. What is the shape of the sampling distribution of x ? Justify your answer. 4. Find the probability that the average fee paid by the sample of households exceeds $55.
Which of the following measure the average deviation of a data set? 1. sample range 2. sample interquartile range 3. sample coefficient of variation 4. sample standard deviation 5. sample variance
Example 19. Find the standard deviation from the following data: Size of the item : 10 11 12 13 14 15 16 Frequency : 7 11 15 10 4 Also find the coefficient of variation.
Find the mean and variance and standard deviation
Example 11. Find the mean deviation from (i) mean and (ii) median for the following data: Marks : 20 18 16 14 12 10 8 6 No. of Students : 2 4 18 27 25 14 1 Also calculate coefficient of variation.
Identify the symbols used for each of the following: (a) sample standard deviation; (b) population standard deviation; (c) sample variance; (d) population variance. If sample data consist of weights measured in grams, what units are used for these statistics and parameter a. The symbol for sample standard deviation is b. The symbol for population standard deviation is c. The symbol for sample variance is d. The symbol for population variance is If sample data consist of weights measured in grams, then correctly complete the following sentences. a. The unit for sample standard deviation would be b. The unit for population standard deviation would be C. The unit for sample variance would be ▼ d. The unit for population variance would be ▼ C
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.
ll Sprint ? 11:30 PM 9 19% A moodle.bucknell.edu Jerry is a newly hired analyst to monitor the performance of Dunkin' Brands, an American restaurant holding company which runs two chains of fast-food restaurants: Dunkin' Donuts and Baskin-Robbins. Given the sales figures of all the stores across the United States, Jerry calculates the following statistics: Mean: the average of the sales figures. Median: the value separating the higher half from the lower half of the sales figures Mode: the number that occurs most frequently in the data Variance: it measures how far the sales figures are spread out from their average value Jerry recalls the implications of the statistics. Which one of them is correct? Select one: II
Which of the following phrases correctly defines population variance? square of the average differences of data entries of the population from the mean squared difference of the average of data entries of the population from the mean average difference of the square of data entries of the population from the mean average of the squared differences of data entries of the population from the mean
Calculate following?
Which of the following is true about the Variance? a. It tells how far the scores lies from the mean. b. The more the spread of data indicates the large the vriance is in relation to the mean. c. The spread of data has no effect on the Variance. d. The small the vriance indicates the more spread of data.
For Table 4, determine the following point estimates: 7. The mathematical expectation. 8. the variance. 9. the root mean square deviation 10. the correlation coefficient between X and Y. Table 4 is in the attached image. Thank you

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a. the range b. the variance c. the standard deviation