10. The heights of a group of 20 students were recorded to the nearest centimeters as follows:153, 157,161, 159, 160,162,161,159, 161,161,160,175,160,159,, 158, 164,a. Find the mean and the standard deviation of the group.b. An outlier is defined as a value that is more than two standard deviations awayfrom the mean. In this group, give the boundaries for outliers and identify if thereis/are outliers.157, 164,164,159

For a set of n observations, x1, x2, ... , xn, mean is given by, And the standard deviation is…

Answered: 10. The heights of a group 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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the driving distances (miles) to wor of 30 people are shown below. assume the population standard deviation is 8 miles. Find: 12, 9, 7, 3, 27, 21, 2, 30, 7, 4, 1, 10, 2, 9, 2, 28, 7, 10, 13, 6, 13, 7, 3, 13, 6, 6, 3, 13 ,12, 16, 18 a) the point estimate of the population mean b) the margin of error for a 95% confidence interval c) contruct a 95% confidence interval for the population mean.
Use the following data set to answer Questions #12 and #13. 65 55 65 54 60 57 55 58 63 58 57 65 57 58 84 Are there any outliers? There exists at least one outlier in the data set at 84. There exists outliers in the data set at 55 and 84. O There are no outliers in the data set.
The following set of data is given 78,79,79,79, 80, 82, 82, 85, 86, 88, 89, 92, 97. For this set of data find: a) The value of the median and the quartiles. b) The mean, mode and the standard deviation. c) Draw a suitably labelled box plot and determine the interquartile range. d) State if there is any type of skew
Select the correct answer and write the appropriate letter in the space provided _____ 1. A grouping of data into classes giving the number of observations in each class is called a(an) a bar chart. b. frequency distribution. c. pie chart. d. cumulative frequency distribution. ______ 2. The distance between consecutive lower class limits is called the a. class interval. b. frequency distribution. c. class midpoint. d. class frequency. ______ 3. The class midpoint is a. equal to the number of observations. b. found by adding the lower class limits of two consecutive classes and dividing by 2. c. equal to the class interval. d. all of the above. ______ 4. The number of observations in a particular class is called the a. class interval. b. class frequency. c. frequency distribution. d. none of the above. ______ 5. A bar chart is used most often when a. you want to show frequencies as compared to total observations. b. you want to show…
Compute the Median and seventh Decile of the following distribution of height: Heights (inches) 57.5 -, 60.0 -, 62.5 -, 65.0 -, 67.5 -, 70.0 -, 72.5 -, Number 6 26 190 281 412 127 38
Use the accompanying data set to complete the following actions. a. Find the quartiles. b. Find the interquartile range. c. Identify any outliers. 41 50 35 43 41 37 41 46 43 39 36 54 42 35 15 53 37 49 29 29 a. Find the quartiles. The first quartile, Q₁, is 1. The second quartile, Q₂, is The third quartile, Q3, is (Type integers or decimals.) b. Find the interquartile range. The interquartile range (IQR) is (Type an integer or a decimal.) c. Identify any outliers. Choose the correct choice below. O A. There exists at least one outlier in the data set at (Use a comma to separate answers as needed.) OB. There are no outliers in the data set. 0 C
The attached plots were constructed using a sample of 272 observations. Each observation gives the elapsed time (in minutes) of an eruption of Old Faithful geyser in Yellowstone national park. a. Which graph is more appropriate for this data set? Explain your answer. b. Use the plots to describe the shape of the distribution of this data set. c. Are there are any potential outliers in this sample? Explain
The interquartile range is more susceptible to outliers in the data than is the range A. True B. False
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Check the following data set for outliers. If there is more than one answer, separate them with commas. Select "None" if applicable. , 33, 24, 39, 36, 59, 40 Outliers
Use the data to identify any outliers.
Use the accompanying data set to complete the following actions. a. Find the quartiles. b. Find the interquartile range. c. Identify any outliers. 56 64 55 59 61 59 63 58 56 59 61 54 59 63 79 a. Find the quartiles. The first quartile, Q₁, is The second quartile, Q₂, is The third quartile, Q3, is (Type integers or decimals.) b. Find the interquartile range. The interquartile range (IQR) is c. Identify any outliers. Choose the correct answer below. (Type an integer or a decimal.) OA. There exists at least one outlier in the data set at (Use a comma to separate answers as needed.) OB. There are no outliers in the data set

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