31. A company of coffee prices at 4 randomly selected grocery stores in Sampaloc, Manila showedincreases from the previous month of 12, 15, 17 and 20 pesos for 200-gram jar. Find the samplevariance and the sample standard deviation.a. 8.3 & 1.33b. 10.5 & 4.21c. 11.3 & 3.37d. 12.7 & 2.55

Answered: Image /qna-images/answer/a7de6806-361d-48fc-ae8e-fc8b7780a293.jpg

Answered: 31. A company of coffee prices at 4…

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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Here are the monthly wage scales of 8 workers from XYZ Knit Works. 15 13 18 12 21 13 26 22 a. Determine the mean of the workers' wages. Answer in exact fraction, or rounded to at least 4 decimal places b. Determine the variance of the workers' wages. Answer in exact fraction, or rounded to at least 4 decimal places
1. Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample data. Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? 40 38 36 28 20 16 14 11 10.7 9.3 2. Listed below are the amounts (dollars) it costs for marriage proposal packages at different baseball stadiums. Find therange, variance, and standard deviation for the given sample data. Include appropriate units in the results. Are there anyoutliers, and are they likely to have much of an effect on the measures of variation? 39 45 45 60 65 90 90 135 175 206 250 325 400 2000 2750
2. The blood cholesterol levels of men age 55 to 64 are approximately Normal, with mean 222milligrams per deciliter (mg/dl) and standard deviation 37 mg/dl. A random sample of 58individuals will be collected and the sample mean cholesterol level will be computed. a. What is the mean of the sample mean? b. What is the standard deviation of the sample mean?
For the Given values of 56, 67.9, 68, 53.8 and 69.8, Calculate 1 Mean 2Algebraic Sum of deviation 3 Variance 4 Standard Deviation.
1. Consider the following sample of numbers: 1, 4, 5, 4, 3, 4, 7, 8, 5, 9, 12, 13, 11, 2. (a) Find the sample mean. (b) Find the sample standard deviation.
4. What is the standard deviation of the data {7, 1, 7, 10, 5, 3, 2}? 5.0 2.7 3.0 9.0
The number of ornaments placed on trees is recorded. The results are as follows: 26 26 22 29 24 30 26 34 21 24 20 31 20 35 32 33 26 26 29 29 Find the Mean, Median, Mode, Midrange, Variance and Standard Deviation of the data.Round to 2 decimal places if necessary. Mean: Median: Mode: Midrange: Variance: Standard Deviation:
4. The variance of a data set is 3410.56. Find the standard deviation for the data set. This ample of
a. Find the mean, median and mode. b. If the value 15.75 was incorrectly written as 45.75, what measure of central tendency will be affected? Support your answer. c. Compute for the semi-interquartile range,absolute deviation, variance and standard deviation of test.
2. 60 matches were played in a football tournament. The table to the right shows the number of goals scored in all matches. Number of Goals 1 3 4 5 Number of Matches 18 20 3 a. Find the median number of goals scored per match. b. Find the mean number of goals scored per match. c. Calculate the standard deviation of the goals scored per match.
3. The following are the number of customers on a certain day in three milktea shops. Calculate the mean, mode, range, standard deviation, coefficient of variation measures. Compare its variability. milktea: 14, 15, 16, 17, 18, 19, 21 Gongcha: 22, 22, 24, 25, 28, 32, 32 Infinitea: 10, 11, 12, 12, 12, 15, 16
For the Given values of 56, 58.2, 61.5, 57.3 and 63.6 ,Calculate (i) Mean (ii)Algebraic Sum of deviation (iii)Variance (iv)Standard Deviation. i) Mean = ii) Sum of Deviation= iii) Variance = 个

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31. A company of coffee prices at 4 randomly selected grocery stores in Sampaloc, Manila showed increases from the previous month of 12, 15, 17 and 20 pesos for 200-gram jar. Find the sample variance and the sample standard deviation. a. 8.3 & 1.33 b. 10.5 & 4.21 c. 11.3 & 3.37 d. 12.7 & 2.55