Answered: A grouped frequency distribution has…

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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Given the following data: Data 1 Data 2 1 1 4 5 5 5 6 5 8 8 Which of the following is best in comparing the variation of the two data sets? a range b interquartile range c standard deviation d variance
Ensure the RaceResults worksheet is active, then use the FREQUENCY function to calculate the frequency distribution of the race results in column D. Place your results in the range G4:G9. Enter a function in cell F22 to calculate the correlation between age (Columns C) and race time (Column D). Enter a function in cell G22 to calculate the covariance between age and race time. Enter a function in cell H22 to calculate the variance of the ages in the data set. Note this is a sample of data not a population. Enter a function in cell 122 to calculate the standard deviation of the ages in the data set.
One of the following is the minimum variance unbiased estimator for u. The sample variance. The sample mean. The sample mean square error. The meadian.
1. Compute the variance of the number of boats sold daily (show your calculation prices in a table) 2. Compute the standard deviation of the number of boats sills daily.
Consider the following population data; 0, -4, 2, -8, 10 a) Calculate the population variance. b) Calculate the population standard deviation
Pls answer it all with solutioms in each number
Given the Data: Seconds Frequency 66-70 4 61-65 8 56-60 7 51-55 2 Compute for the: a) Standard Deviation b) Variance c) Range
Find the range, vanance, and standard deviation for the given sample data. Include appropriate units in the results. Listed below are the measured radiation absorption rates (in Wikg) corresponding to various cell phone models. If one of each model is measured for radiation and the results are used to find the measures of variation, are the results typical of the population of cell phones that are in use? 1.16 0.82 0.51 0.69 1.11 0.82 0.69 0.75 0.52 0.53 1.34
3565 6781 11366 5656 10024 9101 9286 10376 7290 15558 6657 20795 4027 19100 16223 14502 2830 5785 9070 7560 D) Calculate the mean and standard deviation of your data set. You may use technology such as Google Sheets, Excel, or a TI-83/TI-84. Round to the nearest hundredth. Mean 9777.6 Standard Deviation 5090.73 E) Using a significance level a = 0.05, find the critical value using the following steps. 1. What are the degrees of freedom? n D20 d. f.= n- 1=19 = 19 2. Will this be a one-tailed or two tailed test? two-tailed 3. Using table 5 from the back of your textbook (page A18 in Appendix B), what is the critical value? 1.729
We rolled the dice twenty times and wrote down the results: 6 336 356146 3 55 2 2 2 2 3 2 3 a) Detraine the arithmetic mean, mode and median of the sample. Determine the variance and standard deviation of the sample. c) Determine he range of the sample. A Determine the lower and upper quartiles of the sample. Draw box plot.
Given Samples A and B below Sample A: 2.0 Sample B: 4.3 2.8 4.5 O a. Calculate the mean and standard deviation for each sample. Sample A: XA = Sample B: XB = ; SB = Round to two decimal places if necessary b. Calculate the coefficient of variation for each sample. Sample A: CVA = ; SA = _% 4.2 4.2 4.3 4.0 Sample B: CVB Round to two decimal places if necessary c. Which sample is more variable? o Sample A Sample B Neither sample is more variable than the other 4.4 4.3 3.7 4.9 _% 3.6 2.6 2.8 2.2 2.3 4.1
The mean and variance of a set of 9 observations have magnitudes 8 and 3 respectively. If two observations, of magnitude 9 and 7 are removed from the original set, then the magnitude of the new variance is approximately: A. 3.7 B. 3.8 C. 3.6 D. 3.5

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A grouped frequency distribution has the following values calculated: Sfm = 10450 Sfm2 = 4598000 n = 25 The variance is closest to: A 8456.5 B. 9730.1 C 979 D. 9579.2