(a) A company would like to predict how its trainees in sales will perform based on...
28 40 25 40 41 15 3. A farmer would like to investigate the relationship between the obtained yield of apple trees and the amount of weeds found in their roots. For this reason, nine apple trees of the same type were randomly selected and the amount of weeds in their roots (7 grams) was recorded together with their yield (y kilograms). Year #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 Weeds in roots (2) 30 32 25...
(a) A study was conducted to determine whether the yield of olive oil is associated with the average temperature of the area. The data in the table below provide the average kilograms of olive oil per tree (y) and the average temperature (2), measured in degrees Celsius. The data correspond to areas taken for 12 different countries. Average temperature (2) 5 7.5 5 7 8 3 2 8 11 4 5 Olive oil yield (y) 10 20 15 17 25...
Complete parts (a) through (g) for the data below. (ONLY NEED D-G) x 20 30 40 50 60 y 78 75 71 64 50 (a) By hand, draw a scatter diagram treating x as the explanatory variable and y as the response variable. (DONT NEED) (b) Find the equation of the line containing the points (30,75) and (60,50). (DONT NEED) (c) Graph the line found in part (b) on the scatter diagram. Choose the correct graph below. (DONT NEED) (d)...
Attention: Due to 교 bug in Google Chrome, this page may not function correctly. Click her to learn more. 5. Comparing the fit of the regression lines for two sets of data Examine each of the following scatter diagrams and the corresponding regression lines. Identify which line better fits its data. Graph I Graph II 10 10 Next, calculate a measure of how close the data points are to the regression line. Following are the six pairs of data values...
1/2 POINTS PREVIOUS ANSWERS TANAPCALC10 8.4.004. Consider the following. 1 x y 1 .5 2 2 1 0 3 2 4 4.5 4 5 (a) Find an equation of the least squares line for the data. (Round your numerical values to two decimal places.) 129 104 (b) Draw a scatter diagram for the data and graph the least-squares line.
The data below represent the number of days absent, x, and the final grade, y, for a sample of college students at a large university. Complete parts (a) through (e) below. No. of absences, x 0 1 2 3 4 5 6 7 8 9 Final grade, y 88.1 85.1 82.1 79.6 76.5 72.0 62.3 66.7 63.7 60.7 (a) Find the least-squares regression line treating the number of absences, x, as the explanatory variable and the final grade, y, as...
5. A company has recorded data on the weekly sales for its product (y) and the unit price of the competitor's product (x). The data resulting from a random sample of 7 weeks is on the data sheet. Use Excel to develop a scatter diagram and to compute the least squares estimated regression equation and the coefficient of determination (R2). Week Sales 1 2 3 Price 0.33 0.25 0.44 0.4 0.35 0.39 0.29 4 20 14 22 21 16 19...
Case: A small convenience store chain is interested in modeling the weekly sales of a store, y, as a function of the weekly traffic flow on the street where the store is located. The table below contains data collected from 24 stores in the chain. Store Weekly Traffic Flow (thousands of cars) Weekly Sales ($ thousands) 1 59.3 6.3 2 60.3 6.6 3 82.1 7.6 4 32.3 3.0 5 98 9.5 6 54.1 5.9 7 54.4 6.1 8 51.3 5.0...
The sidereal year of a planet is related to the distance of the planet from its sun through a power equation. The following data for a distant solar system show the distances its planets are from their sun and the planets' sidereal years. Complete parts (a) through (d). Distance from sun, x (Millions of miles) 40 Sidereal Year, y 0.29 109 1.27 187 2.84 791 24.39 1822 84.56 2567 140.93 3367 211.15 (a) Draw a scatter diagram treating distance from...
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Complete parts (a) through (h) for the data below - 2 -2 1 5 2 5 у 1 2 (a) By hand draw a scatter diagram treating x as the explanatory variable and y as the response variable. Choose the correct scatter diagram below. Ов Ос. A AY Complete parts (a) through() for the data below - 1 0 -2 1 (b) Find the equation of the line containing the points (-1) and (1,5), y2x+ (55)...