Each of the 8 cats in a pet store was weighed. Here are their weights (in pounds).10, 13, 15, 8, 8, 15, 11, 9Find the mean and median weights of these cats.If necessary, round your answers to the nearest tenth.
Question
Each of the 8 cats in a pet store was weighed. Here are their weights (in pounds).10, 13, 15, 8, 8, 15, 11, 9Find the mean and median weights of these cats.If necessary, round your answers to the nearest tenth.
Solution
To find the mean weight of the cats, you need to add up all the weights and then divide by the number of cats.
Here's how you do it:
Step 1: Add up all the weights: 10 + 13 + 15 + 8 + 8 + 15 + 11 + 9 = 89 pounds
Step 2: Divide the total weight by the number of cats: 89 ÷ 8 = 11.125 pounds
So, the mean weight of the cats is 11.125 pounds. If we round this to the nearest tenth, it would be 11.1 pounds.
To find the median weight, you need to list the weights in numerical order and then find the middle value.
Here's how you do it:
Step 1: List the weights in numerical order: 8, 8, 9, 10, 11, 13, 15, 15
Step 2: Find the middle value. Since there are 8 cats (an even number), the median is the average of the 4th and 5th values.
So, (10 + 11) ÷ 2 = 10.5 pounds
So, the median weight of the cats is 10.5 pounds.
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