Age at diagnosis for each of 20 patients under treatment for meningitis was given in a research paper. Suppose the ages (inyears) were as follows.18 18 | 25192320 63 18 211820181820181928171818n USE SALT(a) Calculate the values of the sample mean and the standard deviation. (Round your standard deviation to four decimalplaces.)sample meanyrstandard deviationyr(b) Compute the upper quartile, the lower quartile, and the interquartile range.upper quartileyrlower quartileyrinterquartile rangeyr(c) Are there any mild or extreme outliers present in this data set? (Enter your answers as comma-separated lists. If thereis no answer, enter NONE.)mild outliersextreme outliers

Given data is18,18,25,19,23,20,63,18,21,18,20,18,18,20,18,19,28,17,18,18sample size(n)=20

Answered: Age at diagnosis for each of 20…

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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Three samples of 4 observations each have been taken, with actual measurements (in centimeters) shown below. Standard deviation is 0.2. Mean chart should include roughly 95.44% of the measures. Sample 1 2 3 12 12 12 12.3 12.4 12 11 12 11 12 11.8 11 Limits for the mean and range charts are (respectively): O a. [12.18;11.78] and [0:0.84] O b. [11.59;11.99] and [0:0.94] O c. [10.78;11.18] and [0:0.84] O d. [11.78;12.18] and [0.2:0.94] O e. None of the above
Age at diagnosis for each of 20 patients under treatment for meningitis was given in the paper "Penicillin in the Treatment of Meningitis" (Journal of the American Medical Association [1984]: 1870-1874). The ages (in years) were as follows: 4.72 18 18 25 19 23 20 69 18 21 18 20 18 18 20 18 19 28 17 18 18 a. Calculate the values of the sample mean and the standard deviation. b. Compute the upper quartile, the lower quartile, and the interquartile range. c. Are there any mild or extreme outliers present in this data set? d. Construct the boxplot for this data set.
7.1 Calculate the Sample mean: Sample standard deviation :
A company was concerned about the length of time a particular vitamin they produce retained its potency. Potency was measured for a random sample of 10 bottles that had just been produced and also for a random sample of 10 bottles after 1 year in storage. The resulting data was used to calculate the summary statistics below. Standard n Mean Deviation Newly produced 10 10.37 0.32 Stored for 1 year 10 9.83 0.24 Difference (New - Stored) 10 0.54 0.43
Find the range, MAD, variance, and standard deviation of the following grouped data?
Consider the following sample data Sample A: 7,14,21 Sample B: 77,84,91 Sample C: 1,080:1,087: 1094 (a) Find the mean and standard deviation for each sample Sample A Sample B Sample C Mean ? ? ? Sample standard Deviation ? ? ? (b) What does this exercise show about the standard deviation? A. The idea is to illustrate that the standard deviation is not a functjion of the value of the mean. B. The idea is to illustrate that the standared deviation is a function of the value of the mean.
The following table gives the math SAT scores for some recent selected years. Find the average, variance, and standard deviation of each. (Round your answers to four decimal places.) Males 500 502 498 504 497 Females 446 453 450 454 451 Males: mean variance standard deviation Females: mean variance standard deviation Which group is varying more? femalesmales cannot be determined
Age at diagnosis for each of 20 patients under treatment for meningitis was given in a research paper. Suppose the ages (in years) were as follows. 18 18 20 18 19 mild outliers (a) Calculate the values of the sample mean and the standard deviation. (Round your standard deviation to four decimal places.) sample mean standard deviation extreme outliers 18 27 (b) Compute the upper quartile, the lower quartile, and the interquartile range. upper quartile lower quartile interquartile range 70- 60- 19 24 (c) Are there any mild or extreme outliers present in this data set? (Enter your answers as comma-separated lists. If there is no answer, enter NONE.) 50- (d) Construct the boxplot for this data set. 40- 30- 28 15 18 18 20 20 68 18 21 18 20 18 70 60- 50- 40- 30- 20 yr yr 10 yr yr yr O 70- 60- 50- 40 30 20 70 60 50 40- 30- 20 O
Listed below are prices in dollars for one night at different hotels in a certain region. Find the range, variance, and standard deviation for the given sample data. Include appropriate units in the results. How useful a the measures of variation for someone searching for a room? 210 111 162 207 175 158 154 202 The range of the sample data is (Round to one decimal place as needed.) The standard deviation of the sample data is (Round to one decimal place as needed.) The variance of the sample data is (Round to one decimal place as needed.) How useful are the measures of variation for someone searching for a room? O A. The measures of variation are not very useful because the values are nominal data that do not measure or count anything, so the resulting statistics are meaningless. B. The measures of variation are very useful because a person does not want to buy a room where the variation is too high. C. The measures of variation are not very useful because when searching for a room,…
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