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A company wishes to compare the expected mileage of eight different types of car tyres. Which one of the following statistical tests is best suited for analysis?

OPTIONS

Multiple regression
ANOVA
Paired-difference testS
Z-test

ANSWER

ANOVA

EXPLANATION

ANOVA is a statistical test that evaluates the difference among means of three or more samples. In this example , each of the eight tyres could be tested and the average expected mileage is recorded. ANOVA analysis determines whether at least 2 of the tyres have significantly different mileages.

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