Homework Answers
Here statement B is incorrect
B.If the data are skewed to the right ,then the mean is smaller to the median.
Because when the data are skewed then mean is closer to the tail and for a right skewed the tail is in the extreme right ,then by number line the mean is greater than the median in aright skewed.
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Question 4 Which statement is NOT correct? OA. The IQR is not sensitive to outliers B....
Which statement is NOT correct? 0 A. The mean is best used for normally distributed data...
Which statement is NOT correct? 0 A. The mean is best used for normally distributed data OB. The IQR is not sensitive to outliers O C. If the data are skewed to the right, then the mean is pulled to the right. OD. If the data are skewed to the right, then the mean is smaller than the median.
If there are outliers (extreme values) in a sample, which of the following is ALWAYS true?...
If there are outliers (extreme values) in a sample, which of the following is ALWAYS true? a. The mean is greater than the median. b. The standard deviation is smaller than expected (smaller than if there were no outliers) DC. The mean will be less than the median im d. The standard deviation will be larger than expected (larger than if there were no outliers)
We were unable to transcribe this imageHere again is the histogram showing the distribution of times,...
We were unable to transcribe this imageHere again is the histogram showing the distribution of times, in minutes, required for 25 rats in an animal behavior experiment to navigate a maze successfully Time for a Group of Rates to Navigate a Maze Time in Minutes Which of the following best describes the shape of the histogram? Symmetric Fught-skewed with no outliers Left-skewed with no outliers Right-skewed with a possible outlier Left-skewed with a possible outier Here again is the histogram...
6). a.b. The accompanying data represent the miles per gallon of a random sample of cars...
6).
a.b.
The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine. (a) Compute the z-score corresponding to the individual who obtained 43.7 miles per gallon. Interpret this result. (b) Determine the quartiles. (c) Compute and interpret the interquartile range, IQR. (d) Determine the lower and upper fences. Are there any outliers? E Click the icon to view the data. (a) Compute the z-score corresponding to the individual who obtained...
1. Which answer below is the best estimate of the percentage of players in the sample...
1. Which answer below is the best estimate of the percentage of players in the sample who earn at least 20 million dollars per year? 50 40 Frequency 30 20 I 10 o 0 3 9 12 15 18 21 24 27 30 Salaries (in millions) a. 3 b. 9 c. 19 d. 32 2. Which statement below accurately compares the mean and median of the sample of salaries? a. The mean is less than the median because the distribution...
True False 3.33333 points QUESTION 9 In a numerical batch of data the standard deviation can...
True False 3.33333 points QUESTION 9 In a numerical batch of data the standard deviation can never be larger then the range? True False 3.33333 points QUESTION 10 A distribution of data that is positively skewed is left skewed? True False :33333 points QUESTION 11 In a numerical batch of data the value of "Q3" can never be smaller than the value of "Q1"? True False 3.33333 points QUESTION 12 A batch of numerical data can only have one mode?...
QUESTION 5 Which statement concerning the t-distribution is false? O AT follows a standard normal distribution...
QUESTION 5 Which statement concerning the t-distribution is false? O AT follows a standard normal distribution OB. The smaller the degrees of freedom the flatter the curve. OC. The t-distribution has a larger standard deviation than the Standard Normal Curve. OD. T-distributions have a mean of 0. o E. The total area under the density curve depends on the degrees of freedom. QUESTION 6 The t-procedures are robust when A. sample size is 12 and the sample data is not...
If most of the prices in a large data set are of approximately the same magnitude...
If most of the prices in a large data set are of approximately the same magnitude except for a few observations that are quite a bit larger, how would the mean and median of the data set compare and what shape would a histogram of the data set have? A.The mean would be larger than the median and the histogram would be skewed with a long right tail. B. The mean would be smaller than the median and the histogram...
EIN3235 Name: Question No. (a) (b) (c) (d PID: o OO o O Oo o o...
EIN3235 Name: Question No. (a) (b) (c) (d PID: o OO o O Oo o o O 12 13 o O O 15 16 O ooO 18 Use the following data to answer questions 1-s 36, 25, 24, 13, 12, 24, 35, 48, 24 1. What is the mean? a. 28.65 b. 26.78 2. What is the median? c 27.82 d. 25.78 c 25 d. 26 3 What is the first quartile of the data? 18.5 d. 145 4. What...
please give correct and answer all question.. this is revision question... 14. Which of the following...
please give correct and answer all question.. this is revision
question...
14. Which of the following statistical tests is BEST TO normally distributed data? in statistical tests is BEST to use for comparing two samples A. Independent sample t-test B.Mann-Whitney test C. Regression analysis D. Logistic regression analysis 15. Which of the following is NOT related to central limit theoret? sample size is large. bution of sample mean, x is approximately normal regardless of Xin the population 9. The mean...
Which statement is NOT correct? 0 A. The mean is best used for normally distributed data OB. The IQR is not sensitive to outliers O C. If the data are skewed to the right, then the mean is pulled to the right. OD. If the data are skewed to the right, then the mean is smaller than the median.
If there are outliers (extreme values) in a sample, which of the following is ALWAYS true? a. The mean is greater than the median. b. The standard deviation is smaller than expected (smaller than if there were no outliers) DC. The mean will be less than the median im d. The standard deviation will be larger than expected (larger than if there were no outliers)
We were unable to transcribe this imageHere again is the histogram showing the distribution of times, in minutes, required for 25 rats in an animal behavior experiment to navigate a maze successfully Time for a Group of Rates to Navigate a Maze Time in Minutes Which of the following best describes the shape of the histogram? Symmetric Fught-skewed with no outliers Left-skewed with no outliers Right-skewed with a possible outlier Left-skewed with a possible outier Here again is the histogram...
6).
a.b.
The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine. (a) Compute the z-score corresponding to the individual who obtained 43.7 miles per gallon. Interpret this result. (b) Determine the quartiles. (c) Compute and interpret the interquartile range, IQR. (d) Determine the lower and upper fences. Are there any outliers? E Click the icon to view the data. (a) Compute the z-score corresponding to the individual who obtained...
1. Which answer below is the best estimate of the percentage of players in the sample who earn at least 20 million dollars per year? 50 40 Frequency 30 20 I 10 o 0 3 9 12 15 18 21 24 27 30 Salaries (in millions) a. 3 b. 9 c. 19 d. 32 2. Which statement below accurately compares the mean and median of the sample of salaries? a. The mean is less than the median because the distribution...
True False 3.33333 points QUESTION 9 In a numerical batch of data the standard deviation can never be larger then the range? True False 3.33333 points QUESTION 10 A distribution of data that is positively skewed is left skewed? True False :33333 points QUESTION 11 In a numerical batch of data the value of "Q3" can never be smaller than the value of "Q1"? True False 3.33333 points QUESTION 12 A batch of numerical data can only have one mode?...
QUESTION 5 Which statement concerning the t-distribution is false? O AT follows a standard normal distribution OB. The smaller the degrees of freedom the flatter the curve. OC. The t-distribution has a larger standard deviation than the Standard Normal Curve. OD. T-distributions have a mean of 0. o E. The total area under the density curve depends on the degrees of freedom. QUESTION 6 The t-procedures are robust when A. sample size is 12 and the sample data is not...
EIN3235 Name: Question No. (a) (b) (c) (d PID: o OO o O Oo o o O 12 13 o O O 15 16 O ooO 18 Use the following data to answer questions 1-s 36, 25, 24, 13, 12, 24, 35, 48, 24 1. What is the mean? a. 28.65 b. 26.78 2. What is the median? c 27.82 d. 25.78 c 25 d. 26 3 What is the first quartile of the data? 18.5 d. 145 4. What...
please give correct and answer all question.. this is revision
question...
14. Which of the following statistical tests is BEST TO normally distributed data? in statistical tests is BEST to use for comparing two samples A. Independent sample t-test B.Mann-Whitney test C. Regression analysis D. Logistic regression analysis 15. Which of the following is NOT related to central limit theoret? sample size is large. bution of sample mean, x is approximately normal regardless of Xin the population 9. The mean...
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