CAT 2023 Slot 1 — DILR Question 17
Answer the following questions based on the information given below:
Five restaurants, coded R1, R2, R3, R4 and R5 gave integer ratings to five gig workers – Ullas, Vasu, Waman, Xavier and Yusuf, on a scale of 1 to 5.
The means of the ratings given by R1, R2, R3, R4 and R5 were 3.4, 2.2, 3.8, 2.8 and 3.4 respectively.
The summary statistics of these ratings for the five workers is given below.
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* Range of ratings is defined as the difference between the maximum and minimum ratings awarded to a worker.
The following is partial information about ratings of 1 and 5 awarded by the restaurants to the workers.
(a) R1 awarded a rating of 5 to Waman, as did R2 to Xavier, R3 to Waman and Xavier, and R5 to Vasu.
(b) R1 awarded a rating of 1 to Ullas, as did R2 to Waman and Yusuf, and R3 to Yusuf.
To how many workers did R2 give a rating of 4?
Answer & solution
Answer: 0
Easy
The full grid was fixed in Q1 of this set. Just read off R2's row and count the 's.
Completed grid (rows = restaurants, columns = workers):
| Ullas | Vasu | Waman | Xavier | Yusuf | |
|---|---|---|---|---|---|
| R1 | 1 | 4 | 5 | 3 | 4 |
| R2 | 2 | 2 | 1 | 5 | 1 |
| R3 | 4 | 4 | 5 | 5 | 1 |
| R4 | 2 | 4 | 4 | 1 | 3 |
| R5 | 2 | 5 | 2 | 4 | 4 |
R2 gave ratings to Ullas, Vasu, Waman, Xavier, Yusuf. None of these is a .