Homework Answers
![> # (a) >xec(3,5.8.15.20.21.24) summary(x)[4] Mean 13.71429 summary(x)[3] Median 15 汫(c) #let x-new-ln(x) > x_new-ln(x) summary(x_new)[4] Mean 2.387693 >summary(x_new)[3] Median 2.70805 > #(c) > In(13.7142) [11 2.61843:2 > #1n(mean(x)) is not equal to mean(x-new) In (15) [1] 2.70805 > #1n(median(x)) is equal to median(x-new/](http://img.homeworklib.com/questions/9fa476c0-70a7-11ea-862a-41561e4a466d.png?x-oss-process=image/resize,w_560)
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7. Consider the six numbers: 3, 5, 8, 15, 20, 21, 24 (a) Compute the mean...
The numbers were 5, 5, 8, 10, 12, 15, 15, 19, 20, 21 3) Find the mean, median,...
The numbers were 5, 5, 8,
10, 12, 15, 15, 19, 20, 21
3) Find the mean, median, SD & IQR for the data in (1) after it has been transformed as follows Which statement is true? new value = 2.8(old value)-7.2 a) all four measures change so that new value = 2.8(old value)-7.2 mean, median & IQR change so that new value = 2.8(old value)-7.2, but new SD = 2.8(old SD). the mean & median change so that new value =...
5) Consider a sample with data values of 12, 17, 10, 16, and 20. Compute mean,...
5) Consider a sample with data values of 12, 17, 10, 16, and 20. Compute mean, median, range variance, and standard deviation 6) Consider a sample with data values of 12, 17, 10, 16, and 20. Compute the z-scores for the ataset.
Consider a sample with six observations of 5, 25, 9, 24, 18, and 15. Compute the...
Consider a sample with six observations of 5, 25, 9, 24, 18, and 15. Compute the z-score for each observation. (Leave no cells blank - be certain to enter "O" wherever required. Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.) Answer is complete but not entirely correct. Sample observations - 5 25 Z-score 121.00 1.23 0.96 X 1.10 X 0.27 ® (0.14) X 24 18 15
H-35 20 8 10 12 5 10 20 10 7 4 15 4 25 8 7...
H-35 20 8 10 12 5 10 20 10 7 4 15 4 25 8 7 4 582 10 7 697787 676 10 3 12 10 5 3 1 5357 2 FYNNN YYYYYY Y N N N N N N N N N N N c-25 19 22 20 22 31 21 18 24 20 28 23 29ー// 23 22 25 21 22 21 I- BMFFM F F M M M M M F F F F F F M...
Consider the following time series data: Month 1 2 3 4 5 6 7 Value 24...
Consider the following time series data: Month 1 2 3 4 5 6 7 Value 24 13 21 14 20 23 15 (c) Use α = 0.2 to compute the exponential smoothing values for the time series. Compute MSE and a forecast for month 8. If required, round your answers to two decimal places. Do not round intermediate calculation. MSE: The forecast for month 8: (e) Use trial and error to find a value of the exponential smoothing coefficient α...
Suppose you have the following data, with a mean and standard deviation of 5 and 2.1...
Suppose you have the following data, with a mean and standard deviation of 5 and 2.1 3 3 4 5 7 8 If you were to subtract 2 from every observation, what change - if any- would you see in the transformed mean and standard deviation? the mean and standard deviation would decrease the mean wold stay the same but the standard deviation would decrease the mean and standard deviation would stay the same the mean would decrease but the...
1. Consider the following POPULATION of quiz scores {18, 23, 7, 20, 15, 12, 6, 23,...
1. Consider the following POPULATION of quiz scores {18, 23, 7,
20, 15, 12, 6, 23, 17, 16 }
Compute the following: the mean ,μ, the variance, σ2, the
standarddeviation, σ.
State the mode, if one exists __________
ApplytheEmpiricalRuleatthe95%level.
What percentage of these Quiz Scores actually lie within the
interval found in part c? _________________________
II. Again consider the given Quiz Scores: {18, 23, 7, 20, 15,
12, 6, 23, 17, 16 }
Determine Q1, the median, and Q3:
Draw...
1). The average (arithmetic mean) of 7 different numbers is 5 Consider the following two quantities:...
1). The average (arithmetic mean) of 7 different numbers is 5 Consider the following two quantities: A. The median of the 7 numbers. B. 5. A. Quantity A is greater than Quantity B B. Quantity B is greater than Quantity A C. The two quantities are equal. D. The relationship cannot be determined without more information. 2). List S = {16, 9, 23, X, 13, 16} In list S, the mean and median are equal to one another. What is...
Consider the following stock price data (in dollars) to answer the questions in this section. Use...
Consider the following stock price data (in dollars) to answer the questions in this section. Use R. 10 7 20 12 75 15 9 18 4 12 14 8 Definitions: 1. Mean, median, mode, and standard deviation are obvious 2. Min-Max normalization: if x is a vector variable, the (x - min(x))/(max(x) - min(x)) 3. To find z-scores use the scale() function in R 4. Decimal scaling: Find the biggest absolute value in the data, count the number of digits...
Consider the following stock price data (in dollars) to answer the questions in this section. Use...
Consider the following stock price data (in dollars) to answer the questions in this section. Use R. 10 7 20 12 75 15 9 18 4 12 8 14 Definitions: 1. Mean, median, mode, and standard deviation are obvious 2. Min-Max normalization: if x is a vector variable, the (x - min(x))/(max(x) - min(x)) 3. To find z-scores use the scale() function in R 4. Decimal scaling: Find the biggest absolute value in the data, count the number of digits...
The numbers were 5, 5, 8,
10, 12, 15, 15, 19, 20, 21
3) Find the mean, median, SD & IQR for the data in (1) after it has been transformed as follows Which statement is true? new value = 2.8(old value)-7.2 a) all four measures change so that new value = 2.8(old value)-7.2 mean, median & IQR change so that new value = 2.8(old value)-7.2, but new SD = 2.8(old SD). the mean & median change so that new value =...
5) Consider a sample with data values of 12, 17, 10, 16, and 20. Compute mean, median, range variance, and standard deviation 6) Consider a sample with data values of 12, 17, 10, 16, and 20. Compute the z-scores for the ataset.
Consider a sample with six observations of 5, 25, 9, 24, 18, and 15. Compute the z-score for each observation. (Leave no cells blank - be certain to enter "O" wherever required. Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.) Answer is complete but not entirely correct. Sample observations - 5 25 Z-score 121.00 1.23 0.96 X 1.10 X 0.27 ® (0.14) X 24 18 15
H-35 20 8 10 12 5 10 20 10 7 4 15 4 25 8 7 4 582 10 7 697787 676 10 3 12 10 5 3 1 5357 2 FYNNN YYYYYY Y N N N N N N N N N N N c-25 19 22 20 22 31 21 18 24 20 28 23 29ー// 23 22 25 21 22 21 I- BMFFM F F M M M M M F F F F F F M...
1. Consider the following POPULATION of quiz scores {18, 23, 7,
20, 15, 12, 6, 23, 17, 16 }
Compute the following: the mean ,μ, the variance, σ2, the
standarddeviation, σ.
State the mode, if one exists __________
ApplytheEmpiricalRuleatthe95%level.
What percentage of these Quiz Scores actually lie within the
interval found in part c? _________________________
II. Again consider the given Quiz Scores: {18, 23, 7, 20, 15,
12, 6, 23, 17, 16 }
Determine Q1, the median, and Q3:
Draw...
Consider the following stock price data (in dollars) to answer the questions in this section. Use R. 10 7 20 12 75 15 9 18 4 12 14 8 Definitions: 1. Mean, median, mode, and standard deviation are obvious 2. Min-Max normalization: if x is a vector variable, the (x - min(x))/(max(x) - min(x)) 3. To find z-scores use the scale() function in R 4. Decimal scaling: Find the biggest absolute value in the data, count the number of digits...
Consider the following stock price data (in dollars) to answer the questions in this section. Use R. 10 7 20 12 75 15 9 18 4 12 8 14 Definitions: 1. Mean, median, mode, and standard deviation are obvious 2. Min-Max normalization: if x is a vector variable, the (x - min(x))/(max(x) - min(x)) 3. To find z-scores use the scale() function in R 4. Decimal scaling: Find the biggest absolute value in the data, count the number of digits...
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