Considering the data types below compute a and b for Y = a + bX and the value for R-Squared. Show all work X Y 1 2 2 1 3 4 4 8 5 11 6 11 7 12 8 21

Average Age and Length of Service Is the average age of armed services personnel related to the average amount of length of service in months? The data are shown. Age Time Send data to Excel Part: 0 / 5 25.1 25.2 25.8 27 27.1 66.5 70.1 74 89 82 Part 1 of 5 (a) Draw the scatter plot for the variables.

At Bats and Hits The data below show the number of three-base hits (triples) and the number of home runs hit during the season by a random sample of MLB teams. Is there a significant relationship between the data? Triples       25    24    34    31    19    29 Home runs       312    236    301    279    276    270 Send data to Excel Part 1 of 5 Your Answer is correct     (a) Draw the scatter plot for the variables.   At Bats and Hits Home runs y 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 x 5 10 15 20 25 30 35 40 45 50 55 60 0                   Triples Part: 1 / 5 1 of 5 Parts Complete   Part 2 of 5       (b) Compute the value of the correlation coefficient. Round your answer to at least three decimal places. r=?

Statistics is the interpretation of data. True O False e here to search F11 F12 F9 F10 F7 F8 F6 F5 F3 F4 & # 2$ 8 2 3 4 T Y E F G H. D B N M Z X C V

How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y be the average weight of the pony (in kilograms). x 3 6 12 20 26 y 60 95 140 160 189 (a) Make a scatter diagram of the data and visualize the line you think best fits the data.   Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website.   (b) Would you say the correlation is low, moderate, or strong?  low moderate     strong Would you say the correlation is positive or negative?  positive negative     (c) Use a calculator to verify that          x = 67,           x2 = 1265,           y = 644,           y2 = 93,546,  and          xy = 10,544.  Compute r. (Round your answer to three decimal places.)  As x increases from 3 to 26 months, does the value of r imply that y should tend to increase or decrease? Explain your answer.  Given our value of r, y should…

Regression establishes functional relationship between and variable. a. Cross and Managerial O b. Mutual and Managerial O C. Average and Mutual O d. Independent and dependent

Regression The following data are measurements of the relative humidity in a storage location and the moisture content of a sample of raw material taken over 15 days. 1. Fit a least squares line and use it to predict the value of moisture content when the relative humidity is 65. 2. Find ŷ; values corresponding to x;. Relative humidity % Moisture content % 46 12 53 15 29 7 61 17 36 10 39 11 47 11 49 12 52 14 38 55 16 32 8 57 18 54 14 44 12

A researcher want to know if there is a relationship between sleep and anxiety.  The researcher randomly selected n = 5 participants and asked each to rate their sleep quality and anxiety level on a scale of 1 to 5.  The data are below: Sleep X  Anxiety Y 2 2 3 3 2 2 4 2 5 2 Calculate the Sum of Squares for X (SSX)

Test the following data to see whether they are linear. x 2 4 6 8       y 10 17 24 31

dsiplay the data in a scatter plot max weight,x 190 185 155 180 175 170 jump height, y 60 57 54 60 56 64 max height, x 150 160 160 180 190 210 jump height, y 52 51 49 57 59 64