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

• 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

Question 1-

  How many individual ratings cannot be determined from the above information?

Explanation

Answer- possible answer 0

Question 2- To how many workers did R2 give a rating of 4?

Explanation

Answer- Possible answer 0

Question 3- What rating did R1 give to Xavier?

Explanation

Answer- Possible answer- 3

Question 4- What is the median of the ratings given by R3 to the five workers?

Explanation

Answer- possible answer- 4

Question 5-

  Which among the following restaurants gave its median rating to exactly one of the

workers?

1. R4

2. R2

3. R3

4. R5

Explanation

Answer- 1-R4