Approximate the standard deviation for following GFDT.Data60 - 6465 - 6970 - 7475 - 7980 - 8485 - 8990-9495 - 99100 - 104Frequency122411875211sample standard deviation=

The frequency distribution table is as…

Answered: Approximate the standard deviation for…

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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The number of phone-calls the teller received per day was given in the table below. The standard deviation of the grouped data is [ ]. Keep four decimal places when neede Phone Calls (per day) Class 8-11 12 - 15 16- 19 20 - 23 24 - 27 Frequency, f 18 23 38 47 32
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
What is the standard deviation?
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
Which is the largest with regard to the following data set: the range or the standard deviation? 11 11 12 12 12 12 13 15 17 22 22 22 Standard Deviation Range
I need range, variance, and standard deviation please with step by step so I can learn.
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
K Light bulb lifetime. Find the mean and median for the data in the following table. Interval Frequency 799.5-899.5 2 Life (Hours) of 50 Randomly Selected Light Bulbs 899.5-999.5 999.5-1,099.5 8 20 The mean is 1,099.5-1,199.5 1,199.5-1,299.5 10 10
A highschool teacher is interested in examining the math performance of one particular child, Mike, he has observed over several years. The highschool teacher has the mean and standard deviation for each year's maths test along with Mike's score on each test. Year Mean SD Mike's score 2018 90.5 5.1 96 2019 88.7 8.8 95 2020 69.5 3.4 78 Calculate the appropriate statistic to evaluate in which year Mike did his best in the math test relative to the other children tested over the years. To answer this question, we would need to compute a Q1. ABCD for each year, which would be Q2. ABCD for 2018, Q3. ABCD for 2019, and Q4. ABCD for 2020. This would mean that Mike's best math performance was in Q5. ABCD relative to the other children tested over the three years. In that year, he performed better than Q6. ABCD of the other children. Possible answers for Q4:A) -2.50B) -1.67C) 1.67D) 2.50 Possible answers for Q5:A) 2018B) 2019C) 2020D) Cannot tell…
A highschool teacher is interested in examining the math performance of one particular child, Mike, he has observed over several years. The highschool teacher has the mean and standard deviation for each year's maths test along with Mike's score on each test. Year Mean SD Mike's score 2018 90.5 5.1 96 2019 88.7 8.8 95 2020 69.5 3.4 78 Calculate the appropriate statistic to evaluate in which year Mike did his best in the math test relative to the other children tested over the years. To answer this question, we would need to compute a Q1. for each year, which would be Q2. for 2018, Q3. for 2019, and Q4. for 2020. This would mean that Mike's best math performance was in Q5. relative to the other children tested over the three years. In that year, he performed better than Q6. of the other children. Possible answers for Q1:A) performanceB) t-scoreC) raw scoreD) z-score Possible answers for Q2:A) -1.08B) 0.63C) 1.08D) -0.63 Possible answers for…
Use the following raw scores to answer the questions below. 29 21 19 29 20 28 28 29 32 29 15 19 = _____%tile Find the Mean and Standard Deviation of the scores in Excel. mean = Standard Deviation = Convert the first three raw scores in the list on the previous page (29, 21, & 19) to z-scores. 29 = ___________ 21 = ____________ 19 = _____________ You administer a psychological test that has a normal distribution in the population. You know the Mean = 100 and the Standard Deviation = 15. Order the following (a-e) from smallest to largest. Raw Score of 86 Z-Score of 1.5 Percentile Rank of 98% Score that is 0.5 Standard Deviations below the Mean T-score of 80 _________ _________ _________ _________ _________ Eleanor scores 690 on the SAT math test. The normal distribution of SAT math scores has a mean of 500 and standard deviation of 100. Gerald takes the American…

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Approximate the standard deviation for following GFDT. Data 60 - 64 65 - 69 70 - 74 75 - 79 80 - 84 85 - 89 90-94 95 - 99 100 - 104 Frequency 12 24 11 8 7 5 2 1 1 sample standard deviation =