The rapid advancement in calculator technology over the past 30 years has led to

Question

The rapid advancement in calculator technology over the past 30 years has led to a decrease in the price of a basic, four-function calculator. In August 1972, the four-function Sinclair Executive calculator was introduced for around $150. By the end of the decade, comparable calculators were selling for under $10. Suppose the table gives the average price of a four-function calculator from 1972 to 1980. Use logistic regression to find the logistic model for the data. (Round all numbers to four decimal places.) C(t) =

Explanation / Answer

R code is

z=read.table(file.choose(),head=T)

glm(t~res,data=z,family = poisson())

output is

Call: glm(formula = t ~ res, family = poisson(), data = z)

Coefficients:
(Intercept) res
2.28414 -0.01679

Degrees of Freedom: 8 Total (i.e. Null); 7 Residual
Null Deviance: 18.75
Residual Deviance: 1.992 AIC: 31.75

so C(q)=2.2841-0.0168*year

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