Find the point estimate of the population parameter and the standard deviation for each of the following sets of data Scores in a long test in Science787586827085838680928285808884869088907883908684758577888590858383868384869285807688798480888088

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Answered: Find the point estimate of 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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Find the point estimate of the population parameter and the standard deviation for each of the following sets of data Percentage of parents in favor of including cultural values in the mathematics curriculum 90 70 80 76 81 82 76 84 89 59 76 78 75 89 79 89 92 42 58 84 75 90 80 78 82 68 82 82 68 78 79 80 72 54 83 80 78 79 80 84 81 69 78 78 80 82 81 90
Find the range, sample standard deviation and inter-quartile range (1QR) of the following data set. 31 31 39 61 66 78 82 89 90 93 range = (Please enter an exact answer.) standard deviation (s) = (Round to one decimal place.) IQR = (Please enter an exact answer.) A new number, 264, is added to the data set above. Find the range, sample standard deviation and IQR of the new data set. range = (Please enter an exact answer.) standard deviation = |(Round to one decimal place.) IQR = (Please enter an exact answer.) Which measure of spread is less affected by the addition of the extreme observation? Range standard deviation O IQR
A national newspaper reported that the state with the longest mean life span is Hawaii, where the population mean life span is 78 years. A random sample of 20 obituary notices in the Honolulu Advertizer gave the following information about life span (in years) of Honolulu residents. 72 68 81 93 56 19 78 94 83 84 77 69 85 97 75 71 86 47 66 27 1. Use a calculator with sample mean and standard deviation keys to find x and s. (Round your answers to two decimal places.) 2. What is the value of the sample test statistic? (Round your answer to three decimal places.)
4. Use Descriptive Statistic tool on the Data Analysis to find the following: d. Standard Deviation е. Variance f. Range g. Skewness Table: 88 62 63 88 65 85 83 76 72 63 60 46 85 71 67 75 78 87 70 42 63 90 63 60 73 55 62 62 83 79 78 40 51 56 80 90 47 48 54 77 86 55 76 52 76 40 52 72 43 60
Find the sample standard deviation for the following Grouped Frequency Data Table (GFDT). Lower Class Limit Upper Class Limit Frequency 40 44 1 45 49 8 50 54 3 55 59 4 60 64 6 65 69 11 70 74 2 75 79 9 80 84 5
Find the range, sample standard deviation and inter-quartile range (IQR) of the following data set. 35 42 42 63 71 79 84 85 96 98 range = (Please enter an exact answer.) standard deviation (ss) = (Round to one decimal place.) IQR = (Please enter an exact answer.)A new number, 139, is added to the data set above. Find the range, sample standard deviation and IQR of the new data set.range = (Please enter an exact answer.) standard deviation = (Round to one decimal place.) IQR = (Please enter an exact answer.)Which measure of spread is less affected by the addition of the extreme observation? standard deviation Range IQR
Consider a data set containing the following values: 60 93 84 80 95 99 78 90 The mean of the preceding values is 84.875. The deviations from the mean have been calculated as follows: -24.875 8.125 -0.875 -4.875 10.125 14.125 -6.875 5.125 If this is sample data, the sample variance is and the sample standard deviation is If this is population data, the population variance is and the population standard deviation is Suppose the smallest value of 60 in the data was misrecorded as 75. If you were to recalculate the variance and standard deviation with the 75 instead of the 60, your new values for the variance and standard deviation would be
STANDARD DEVUTATION
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
The data given is shown below 40 40 43 46 44 49 51 54 46 51 47 49 49 45 45 44 45 41 49 52 51 54 50 51 41 52 53 50 46 56 42 42 40 42 49 47 51 48 46 57 48 55 49 46 57 44 49 43 44 43 51 48 48 46 49 Class width = 6 Find the following: A. standard deviation B. Variance C. Percentile (50th)

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78	75	86	82	70	85	83	86
80	92	82	85	80	88	84	86
90	88	90	78	83	90	86	84
75	85	77	88	85	90	85	83
83	86	83	84	86	92	85	80
76	88	79	84	80	88	80	88

78	75	86	82	70	85	83	86
80	92	82	85	80	88	84	86
90	88	90	78	83	90	86	84
75	85	77	88	85	90	85	83
83	86	83	84	86	92	85	80
76	88	79	84	80	88	80	88

Find the point estimate of the population parameter and the standard deviation for each of the following sets of data Scores in a long test in Science 78 75 86 82 70 85 83 86 80 92 82 85 80 88 84 86 90 88 90 78 83 90 86 84 75 85 77 88 85 90 85 83 83 86 83 84 86 92 85 80 76 88 79 84 80 88 80 88

78	75	86	82	70	85	83	86
80	92	82	85	80	88	84	86
90	88	90	78	83	90	86	84
75	85	77	88	85	90	85	83
83	86	83	84	86	92	85	80
76	88	79	84	80	88	80	88