Consider the model for the data ,

MATHEMATICS · Single correct · IB Diploma Programme · Mathematics: Applications and Interpretation · Statistics and Probability · Statistics and Probability

Problem

Consider the model

y=\dfrac{a}{x}

for the data

(1,3)

(2,1.8)

, and

(3,1.2)

. Which value of

a

minimizes

S(a)=\sum_{i=1}^3\bigl(y_i-\tfrac{a}{x_i}\bigr)^2

? (a)

3.27

(b)

3.40

(c)

3.16

(d)

3.00

Related theory

Regression

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