MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
expand_more
expand_more
format_list_bulleted
Topic Video
Question
Discuss the characteristics of the basic descriptive statistics : sample size , mean , and standard devation.
Expert Solution
arrow_forward
Step 1
Characteristics of mean:
- Mean represents all the values of the data.
- Outliers of the data affects the mean.
- The sum of deviations about mean is zero.
arrow_forward
Step 2
Characteristics of standard deviation:
- It describes the variation in data.
- It measures the spread of data about the mean.
- It can never be negative.
- It is sensitive to outliers.
- The small value of standard deviation tells that the values of data tends to be very close to each other.
Trending nowThis is a popular solution!
Step by stepSolved in 3 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- Consider the following data: 2, 10, 14, 12, 4, 4, 10 Step 1 of 3: Calculate the value of the sample variance. Round your answer to one decimal place.arrow_forwardConsider the following sample data: 6, 10, 4, 3, 7, 9, 21, and 14. What is the variance? Select one: a. 34.79 b. 33.56 c. 34.21 d. 34.02arrow_forwardIncome Tax and the IRS. In 2010, the Internal Revenue Service (IRS) sampled 308,946 tax returns to obtain estimates of various parameters. Data were published in Statistics of Income, Individual Income Tax Returns. According to that document, the mean income tax per return for the returns sampled was $11,266. a. Explain the meaning of sampling error in this context.b. If, in reality, the population mean income tax per return in 2010 was $11,354, how much sampling error was made in estimating that parameter by the sample mean of $11,266?c. If the IRS had sampled 400,000 returns instead of 308,946, would the sampling error necessarily have been smaller? Explain your answer.d. In future surveys, how can the IRS increase the likelihood of small sampling error?arrow_forward
- The mean price for used cars is $10,145 . A manager of a Kansas City used car dealership reviewed a sample of 50 recent used car sales at the dealership in an attempt to determine whether the population mean price for used cars at this particular dealership differed from the national mean. The prices for the sample of 50 cars are shown in the table below. 11,359 10,829 10,380 11,454 13,176 8,397 12,559 6,594 11,558 12,653 10,750 6,319 12,018 11,176 11,644 8,221 12,408 11,007 10,063 8,583 12,736 8,142 12,681 6,435 6,297 6,906 11,064 12,476 12,103 6,240 6,668 7,427 13,041 11,237 7,131 10,306 8,228 10,245 7,683 9,775 11,166 6,524 6,487 8,317 11,815 9,836 10,249 11,173 7,156 8,307 b. What is the p-value? Enter negative value if your answer is negative. t-value (to 3 decimals)arrow_forwardFund the mean and variance for the following sample data 12, 16, 11, 23, 9, 17, 12, 25arrow_forwardAssuming a sample size of 76, what is the 90th percentile for the AVERAGE teacher’s salary?arrow_forward
- For the following dataset:a) Compute and compare the sample mean and median. By how much the largest sample observation can be decreased while the median stays the same? b) Calculate the sample variance and standard deviation. c) Find the five numbers summary and draw a Box plot.arrow_forwardConsider the following sets of sample data: A: $2.48 , $1.02 , $1.82 , $2.24 , $2.43 , $2.63 , $1.81 , $2.18 , $1.58 , $1.73 , $1.37 , $1.18 , $1.53 , $1.06 B: 97 , 134 , 139 , 126 , 120 , 143 , 141 , 142 , 113 , 99 , 129 Step 1 of 2: For each of the above sets of sample data, calculate the coefficient of variation, CV. Round to one decimal place. what is the cv for data set a and barrow_forwardYou answered this question: What is the Sample Variance for the following numbers:52, 62, 52, 45, 41arrow_forward
- Consider the following sets of sample data: A: 2.6, 3.8, 2.6, 4.0, 1.9, 1.8, 4.3, 2.2, 1.9, 2.0, 4.4, 4.4, 3.0, 3.8 B: $2.64, $2.18, $1.92, $2.31, $2.64, $1.40, $1.82, $1.68, $2.51, $1.29, $2.34 Step 1 of 2: For each of the above sets of sample data, calculate the coefficient of variation, CV. Round to one decimal place. Answer How to enter your answer (opens in new window) TV for Data Set A: CV for Data Set B: % %arrow_forwardInter-State Moving and Storage Company wishes to establish a control chart to monitor the proportion of residential moves that result in written complaints due to late delivery, lost items, or damaged items. A sample of 50 moves is selected for each of the last 12 months. The number of written complaints in each sample is 8, 7, 4, 8, 2, 7, 11, 6, 7, 6, 8, and 12. Click here for the Excel Data File a. Insert the mean proportion defective, UCL, and LCL. (Leave no cells blank - be certain to enter "O" wherever required. Round your Intermediate calculations and final answers to 2 decimal places.) Mean proportion defective UCL LCL c. Does it appear that the number of complaints is out of control for any of the months? O Yes O No MacBook Airarrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman