A cellular phone company monitors monthly phone usage. The following data represent the monthly phone use in minutes of one particular customer for the past 20 months. Usethe given data to answer parts (a) and (b).(a) Determine the standard deviation and interquartile range of the data.S= (Round to two decimal places as needed.)324 515402 458 338464 343 384 548 514495 444 365 423 501552 328 496 394429

Given that,A cellular phone company monitors monthly phone usage. The data is:…

Answered: A cellular phone company monitors…

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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Similar questions

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
Mr. Stant collected information on how much customers spend at Walmart and Target. He created the following histograms. Which of the statements must be true about the two data sets displayed? a The standard deviation of amounts spent at Walmart is less than the standard deviation of the amounts spent at Target. b The median amount spent at Walmart is equal to the median amount spent at Target. c The standard deviation of amounts spent at Walmart is more than the standard deviation of the amounts spent at Target. d The range of amounts spent at Walmart is equal to the range of amounts spent at Target. e The mean amount spent at Walmart is equal to the mean amount spent at Target.
Illustration 3. Find out the value of quartile deviation and its cocfficient from the following data : Roll No. 2 3 4 5 6 Marks 20 28 40 12 30 15 50
A baker keeps count of the number of doughnuts sold each day for consecutive selected 15 days. The numbers are (b) 135 147 134 146 155 155 141 135 147 151 147 175 151 156 147 (i) (1i) (ii1) Find the median. (iv) Find the mode. Find the mean. Find the standard deviation.
Identify the symbols used for each of the following: (a) sample standard deviation; (b) population standard deviation; (c) sample variance; (d) population variance. If sample data consist of weights measured in grams, what units are used for these statistics and parameter a. The symbol for sample standard deviation is b. The symbol for population standard deviation is c. The symbol for sample variance is d. The symbol for population variance is If sample data consist of weights measured in grams, then correctly complete the following sentences. a. The unit for sample standard deviation would be b. The unit for population standard deviation would be C. The unit for sample variance would be ▼ d. The unit for population variance would be ▼ C
describe the table please in statistics terms
What is the population standard deviation using the following formula
Use the given data values (a sample of female arm circumferences in centimeters) to identify the corresponding z scores that are used for a normal quantile plot, then identify the coordinates of each point in the normal quantile plot. Construct the normal quantile plot, then determine whether the data appear to be from a population with a normal distribution. a. List the z scores for the normal quantile plot. (Round to two decimal places as needed. Use ascending order.) b. identify the coordinates of each point in the normal quantile plot. Use ordered pairs for the form (x,y), where x is the sorted arm circumferences in ascending order, and y is the corresponding z score. (Round to two decimal places as needed. Use ascending order.)
Task 2 (25 mins) 1- If marks of 20 students in one class out of 100 were as the following (Screen shot of tables, figures, and Excel file are required): 67 45 62 74 51 70 95 54 39 43 47 73 20 35 57 85 54 29 49 a. Find the mean, median and standard deviation of these marks. b. Construct the frequency table using interval width of 10 marks. C. Create a histogram chart (Present data in a method that can be understood by a non- technical audience). d. Find the probability of each age interval and represent that using histogram (Present data in a method that can be understood by a non- technical audience). e. From the graph in part d, find the probability that student get a grade of 70 or less and show how you find that on the figure.
Find the mean X̅ and the standard deviation S of the following data: i Xi 1 6 2 16 3 20 4 15 the mean X̅ = the standard deviation S =
Would appreciate the help.

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