question archive The data show the chest size and weight of several bears
The data show the chest size and weight of several bears
Subject:StatisticsPrice:2.87 Bought7
The data show the chest size and weight of several bears. Find the regression? equation, letting chest size be the independent? (x) variable. Then find the best predicted weight of a bear with a chest size of 50 inches. Is the result close to the actual weight of 407 ?pounds? Use a significance level of 0.05.
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Answer:
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Step-by-step explanation:
From the above calculated value we get the value are as:
n 6
sum(XY) 137925.00
sum(X) 278.00
sum(Y) 2954.00
sum(X^2) 12974.00
sum(Y^2) 1467334.00
b 11.3179
a -32.0607
Formula for regression equation are as:
y = -32.1 + 11.3x
when actual weight = 50
y = -32.1 + 11.3 X 50
= 532.9
The difference between the result and the 407 is 532.9 - 407 = 125.9, hence the result is very much different .
