Fall 2020 Yi_sales Xi_advert Xi*Yi Xi 2 Predicted Yi_sales Residuals Residuals 2 700 8 5600 64 XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX 560 2 1120 4 XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX 1000 13 13000 169...

			Fall 2020
Yi_sales	Xi_advert	Xi*Yi	Xi²	Predicted Yi_sales	Residuals	Residuals²
700	8	5600	64	626.6307	31.36929	984.0326
560	2	1120	4	292.4166	267.5834	71600.89
1000	13	13000	169	892.8691	47.13091	2221.323
302	5.8	1751.6	33.64	513.3378	-166.338	27668.26
100	2.1	210	4.41	303.7459	-179.746	32308.57
		21681.6	275.05			134783.1
y-bar =	532.4
x-bar =	6.18

Changed for fall 2020

Question 13. For the sales regression in the very previous question, What is the numerical value of b₁, or the sample slope coefficient for the sales regression? The data is reproduced above for your convenience. Also, here is the sample regression function that you should get values for….

Y_i= b₀ + b₁X_i + e_i

where Y_i= sales (in millions) and X_i= advertising expenditures (in millions)

a)	a. around 62

b)	b. around 82

c)	c. around 70

d)	d. around 148

Jun 07, 2022

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Fall 2020 Yi_sales Xi_advert Xi*Yi Xi 2 Predicted Yi_sales Residuals Residuals 2 700 8 5600 64 XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX 560 2 1120 4 XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX 1000 13 13000 169...

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