Question

You have to buy a pair of running shoes. You have 3 brands: Ruma, Peebok and Abibas. You go online and search for reviews of different brands. There you saw that on the basis of stars, brands are rated. More stars imply better rating. Which brand has the highest average rating?

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• A. Ruma
• B. Peebok
• C. Abibas
• D. Both Abibas and Ruma have the same rating.

Answer 1

The correct option is C

Abibas

Average star rating = $\frac{\text{Total number of stars given by people}}{\text{Total number of people who gave the rating}}$.

For Ruma,average star rating = $\frac{180\times 5+104\times 4+95\times 3+12\times 2+11\times 1}{180+104+95+12+11}$ = 4.07

For Peebok,average star rating = $\frac{150\times 5+110\times 4+87\times 3+22\times 2+23\times 1}{150+110+87+22+23}$ = 3.87

For Abibas,average star rating = $\frac{234\times 5+98\times 4+88\times 3+16\times 2+18\times 1}{234+98+88+16+18}$ = 4.13

4.13 > 4.07 > 3.87

So, Abibas has the highest rating.