Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
a) Histogram No the variable ahe is normally distributed. According to the Jarque-Bera test, H0: X is normal H 1: X is not normal P-value =0.0000 Hence it is insufficient to reject the null hypothesis that X is normal at 1%, 5%, 10% significant level. b) scatter diagram. It’s heteroskedasticity. Spread change with age. C) Estimated intercept is 3.324. Slope coefficient is 0.4519 d)3.324+0.451931*26=15.074 3.324+0.451931*30=16.882 e) critical values: H0: β1=0 H1: β1≠0 ̂ −0 𝛽 0.4519 1 𝑡 − 𝑠𝑡𝑎𝑡𝑖𝑠𝑡𝑖𝑐 = 𝑆𝐸(𝛽 ̂ = 0.032967 = 13.7076>1.96 1) P-value: 0.0000 We reject H0 Confidence interval: [0.4519-1.96x0.033, 0.4519+1.96x0.033] [-0.1949, 1.098] f) R2=0.02254 g) Estimated intercept is 13.80961. Slope coefficient is 6.497478 h) Estimated intercept is 17.77262. Slope coefficient is -2.414054