Question

In: Statistics and Probability

Consider the following. n = 8 measurements: 4, 3, 7, 8, 5, 6, 4, 6 Calculate...

Consider the following.

n = 8

measurements: 4, 3, 7, 8, 5, 6, 4, 6

Calculate the sample variance, s², using the definition formula. (Round your answer to four decimal places.)

s² =

Calculate the sample variance, s² using the computing formula. (Round your answer to four decimal places.)

s² =

Find the sample standard deviation, s. (Round your answer to three decimal places.)

s =

Solutions

Expert Solution


4	-1.375	1.890625
3	-2.375	5.640625
7	1.625	2.640625
8	2.625	6.890625
5	-0.375	0.140625
6	0.625	0.390625
4	-1.375	1.890625
6	0.625	0.390625

---------------------------------------------------------------------------------------------------------


4	16
3	9
7	49
8	64
5	25
6	36
4	16
6	36

---------------------------------------------------------------------------------------------------------

orchestra answered 1 year ago

Next > < Previous

Related Solutions

n = 8 measurements: 5, 3, 6, 7, 6, 5, 4, 7 Calculate the sample variance,...

n = 8 measurements: 5, 3, 6, 7, 6, 5, 4, 7 Calculate the sample variance, s2, using the definition formula. (Round your answer to four decimal places.) s2 = Calculate the sample variance, s2 using the computing formula. (Round your answer to four decimal places.) s2 = Find the sample standard deviation, s. (Round your answer to three decimal places.) s =

x 2 8 5 9 4 3 9 6 7 8 y 3 6 5 7...

x 2 8 5 9 4 3 9 6 7 8 y 3 6 5 7 9 7 4 6 9 9 -5.48x + 0.17 5.48x + 0.17 -0.17x + 5.48 0.17x + 5.48

3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5 Using the previous question...

3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5 Using the previous question 's scores, If three points were added to every score in this distribution, what would be the new mean? If three points were added to every score in this distribution, what would be the new standard deviation. Remember, you have already calculated population standard deviation in a previous problem. This problem requires two answers.

Consider the following set of observations: Obs. 1 2 3 4 5 6 7 8 9...

Consider the following set of observations: Obs. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 input 1 2 3 4 5 6 7 8 9 10 11 12 13 14 result 1 2 3 5 8 13 21 34 55 89 144 233 377 610 Enter the data in L1 and L2 in your TI calculator, find the regression line, and construct a scatterplot with the regression line included. Does a line appear to...

The following is a set of data from a sample of n=5. 4 3 6 7...

The following is a set of data from a sample of n=5. 4 3 6 7 10. a. Compute the mean, median, and mode. b. Compute the range, variance, standarddeviation, and coefficient of variation. c. Compute the Z scores. Are there anyoutliers? d. Describe the shape of the data set.

Consider the following time series: Period 1, 2, 3, 4, 5, 6, 7, 8 Demand 15,...

Consider the following time series: Period 1, 2, 3, 4, 5, 6, 7, 8 Demand 15, 17, 14, 7, 10, 12, 7, 5 A. using a trend projection, forecast the demand for period 9 b. calculate the MAD for this forecast SHOW ALL WORK! DO NOT USE EXCEL OR PHSTAT!

Consider the following time series data: Month 1 2 3 4 5 6 7 8 Value...

Consider the following time series data: Month 1 2 3 4 5 6 7 8 Value 24 13 21 12 20 23 15 25 Compute MSE using the most recent value as the forecast for the next period. What is the forecast for month 9? Compute MSE using the average of all the data available as the forecast for the next period. What is the forecast for month 9? Which method appears to provide the better forecast?

[4 5 5 2 4 4 6 3 3 7 5 3 6 3 4 4...

[4 5 5 2 4 4 6 3 3 7 5 3 6 3 4 4 6 5 4 5 3 7 5 5 4 2 6 5 6 6] This is my dataset Find mean, median, mode, variance, standard deviation, coefficient of variation, range, 70th percentile, 3rdquartile of the data and skewness and define what each of these statistics measure. For example, mean is a measure of the central tendency, what about the rest? Use Chebyshev’s rule to find...

[4 5 5 2 4 4 6 3 3 7 5 3 6 3 4 4...

[4 5 5 2 4 4 6 3 3 7 5 3 6 3 4 4 6 5 4 5 3 7 5 5 4 2 6 5 6 6] This is my dataset Split the dataset in two equal parts. You have 30 datavalues. If you split the data in two equal parts each part will contain 15 data values. Call the first part Y and second part X.Draw scatter plot of the 2 datasets, X being on the horizontal...

Consider the paired sample {(3, 1),(3, 5),(6, 6),(6, 8),(7, 10)}. Do the following by hand (you...

Consider the paired sample {(3, 1),(3, 5),(6, 6),(6, 8),(7, 10)}. Do the following by hand (you may use a basic calculator, but not a statistical program). (a) Find estimates βˆ 0 and βˆ 1 of the regression parameters β0 and β1. (b) Make a rough sketch of the data and regression line. (c) Predict the value of y when x = 5. (d) Predict the value of y when x = 15. (e) Which prediction (part c or d) do...

Subjects