To find the weighted average rating, we need to multiply each rating by its frequency, add up the products, and divide by the total frequency.
Mean rating = (5 x 223) + (4 x 48) + (3 x 25) + (2 x 1) + (1 x 3) / (223 + 48 + 25 + 1 + 3)
Mean rating = 1115 + 192 + 75 + 2 + 3 / 300
Mean rating = 1385 / 300
Mean rating = 4.62 (rounded to two decimal places)
Therefore, the mean (weighted average) rating of the pizza cutter is 4.62 stars.
The frequency table shows ratings for pizza cutter. What is the mean (weighted average) rating of 5 stars is 223, 4 stars is 48, 3 stars is 25, 2 stars is 1, and 1 star is 3
1 answer
1 answer