A sample of seven Biology students reported the following figures for number of hours spent studying theST231 course material in the week before the final exam:16 9 9 7 25 23 14Answer the following questions, rounding your answers to two decimal places.(a) What is the mean?(b) What is the median?(c) What is the sample variance?(d) What is the sample standard deviation?(e) What is the range?

The objective of this question is to calculate various statistical measures such as mean, median,…

Answered: A sample of seven Biology students…

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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17
Consider the following sample data. Sample A: 5, 8, 11 Sample B: 64, 67, 70 Sample C: 1,015; 1,018; 1,021 (a) Find the mean and standard deviation for each sample. (b) What does this exercise show about the standard deviation? multiple choice The idea is to illustrate that the standard deviation is not a function of the value of the mean. The idea is to illustrate that the standard deviation is a function of the value of the mean.
Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample data. Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? a. the range of the sample data is $ million. (Type an integer or a decimal.) b.The variance of the sample data is (Round to two decimal places as needed.) c. The standard deviation of the sample data is $ million. (Round to two decimal places as needed.)
The number of ornaments placed on trees is recorded. The results are as follows: 26 26 22 29 24 30 26 34 21 24 20 31 20 35 32 33 26 26 29 29 Find the Mean, Median, Mode, Midrange, Variance and Standard Deviation of the data.Round to 2 decimal places if necessary. Mean: Median: Mode: Midrange: Variance: Standard Deviation:
Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample data. Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? a. The range of the sample data is million. (Type an integer or a decimal.) b. The variance of the sample data is (Round to two decimal places as needed.) c. The standard deviation of the sample data is $million. (Round to two decimal places as needed.)
Listed below are the amounts (dollars) it costs for marriage proposal packages at different baseball stadiums. Find the range, variance, and standard deviation for the given sample data. Include appropriate units in the results. Are there any outliers, and are they likely to have much of an effect on the measures of variation? 38 50 50 65 70 75 85 140 185 216 265 350 400 1500 3000 The range of the sample data is 2962 dollars. (Type an integer or a decimal. Do not round.) The standard deviation of the sample data is 798.4 dollars. (Round to one decimal place as needed.) The variance of the sample data is 637463.1 dollars. (Round to one decimal place as needed.) Are there any outliers and, if so, are they likely to have much of an effect on the measures of variation? OA. No, there are not any outliers. B. Yes, the smallest amounts are much lower than the rest of the data, and appear to be outliers. It is not likely that these are having a large effect on the measures of variation. OC.…
Suppose you multiply the data for the duration of hospital stay by 3. a. What is the effect on the median? b. What is the effect on the mode? c. What is the effect on the mean? d. What is the effect on the sample standard deviation?
Q9 For the following data: 16 32 8 28 12 20 18 Find the following: (a) Sample Variance (b) Sample Standard Deviation (c) Coefficient of Variation
2. At the general hospital, the waiting times (in minutes) before seeing the doctor were recorded. A sample of 10 patients was surveyed recently and their waiting times are shown below: 13 15 23 22 19 16 23 17 18 25 Calculate the mean, standard deviation and coefficient of variation.
Consider the following data: −10, −10, 0, 3, −10, 3, 3 Step 1 of 3: Calculate the value of the sample Variance. Round your answer to one decimal place. Step 2 of 3: Calculate the value of the sample deviation. Round your answer to one decimal place. Step 3 of 3: Calculate the value of the range.
What was the age distribution of prehistoric Native Americans? Extensive anthropological studies in the southwestern United States gave the following information about a prehistoric extended family group of 84 members on what is now a Native American reservation. For this community, estimate the mean age expressed in years, the sample variance, and the sample standard deviation. For the ciass 31 and over, use 35.5 as the class midpoint. (Round your answers to one decimal place.) Age range (years) Number of individuals 1-10 11-20 19 21-30 15 31 and over 40 10
For the following sample, answer the following:Remember you can copy and "paste special" the table into the Excel sheet. Here is a sample of the cost of new cars. 34000 31000 37000 28000 27000 38000 39000 29000 40000 25000 26000 30000 Here is a sample of grades on a test. 63 66 84 30 85 89 83 34 79 96 87 71 What is the mean of the grades? What is the sample standard deviation of grades? As expected the cost of cars have a higher standard deviation, since the cost of cars is more spread out than the grades. What is the sample coefficient of variation of grades? Therefore, while the cost of cars have a higher standard deviation, the costs of cars have a lower coefficient of variation and are less spread out relative to their average cost.

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