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Time Series & Trend · Question 50 of 68

What sales, in thousands, does the tractor maker's trend give for 2026?

Question 50

EasyOriginal question

A tractor maker fits the trend y=120+6xy = 120 + 6x to its yearly sales, where yy is sales in thousands and xx is years counted from 2020 (x=0x = 0 in 2020).

What sales, in thousands, does the tractor maker's trend give for 2026?

Options for question 50

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. 2026 is x=6x = 6.

  2. y=120+6(6)=156y = 120 + 6(6) = 156.

Worth noting

162 takes 2026 as x=7x = 7, counting 2020 as year 1.

Concept
Reading a value off a trend equation
Typical time
90 s
Your time
—
The rule this testsA straight-line trend by least squares
Practise this chapter →

Ten questions from Time Series & Trend, at your own pace.

Practise this chapter →

Ten questions from Time Series & Trend, at your own pace.