In a study of the relation between the price (in thousand pounds) (x) and the number of computers sold (y) monthly, we draw a sample of seven months and obtain the following results Σν-6820 Ex; = 63 The standard deviation of the price is 3.9 thousand pounds ΣΥ-210 The determinant coefficient (R2) = 0.7921 There is an inverse relation between the price and the number of computers sold. Page 1 of 4 Find: a) Find the suitable least squares regression line. b) Give a brief interpretation of the values of the Y-intercept and slope calculated in the previous part. c) Predict the number of computers sold when the price of the computer unit is ten thousand pounds.

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In a study of the relation between the price (in thousand pounds) (x) and the
number of computers sold (y) monthly, we draw a sample of seven months and
obtain the following results
Ex; = 63
ΣΥ-210
ΣΥ-6820
%3D
The standard deviation of the price is 3.9 thousand pounds
The determinant coefficient (R²) = 0.7921
There is an inverse relation between the price and the number of computers
sold.
Page 1 of 4
Find:
a) Find the suitable least squares regression line.
b) Give a brief interpretation of the values of the Y-intercept and slope
calculated in the previous part.
c) Predict the number of computers sold when the price of the computer unit
is ten thousand pounds.
Transcribed Image Text:In a study of the relation between the price (in thousand pounds) (x) and the number of computers sold (y) monthly, we draw a sample of seven months and obtain the following results Ex; = 63 ΣΥ-210 ΣΥ-6820 %3D The standard deviation of the price is 3.9 thousand pounds The determinant coefficient (R²) = 0.7921 There is an inverse relation between the price and the number of computers sold. Page 1 of 4 Find: a) Find the suitable least squares regression line. b) Give a brief interpretation of the values of the Y-intercept and slope calculated in the previous part. c) Predict the number of computers sold when the price of the computer unit is ten thousand pounds.
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