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Author Question: What is the relationship between diamond price and carat size? 307 diamonds were sampled and a ... (Read 58 times)

jeatrice

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on: Feb 14, 2020
What is the relationship between diamond price and carat size? 307 diamonds were sampled and a straight-line relationship was hypothesized between y = diamond price (in dollars) and x = size of the diamond (in carats). The simple linear regression for the analysis is shown below:

Least Squares Linear Regression of PRICE

Predictor
Variables Coefficient Std Error T P
Constant -2298.36 158.531 -14.50 0.0000
Size 11598.9 230.111 50.41 0.0000

R-Squared 0.8925 Resid. Mean Square (MSE) 1248950
Adjusted R-Squared 0.8922 Standard Deviation 1117.56

Which of the following assumptions is not stated correctly?
◦ The values of ε associated with any two observations are dependent on one another.
◦ The variance of the probability distribution of ε is constant for all settings of the independent variable.
◦ The probability distribution of ε is normal.
◦ The mean of the probability distribution of ε is 0.
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by jeatrice on Feb 14, 2020

yotaSR5

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Reply #1 on: Feb 14, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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jeatrice

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Reply 2 on: Feb 14, 2020
Great answer, keep it coming :)

bblaney

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Reply 3 on: Yesterday
Wow, this really help

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