Finding the mean, also known as averaging numbers, is a very useful thing to know how to do, especially when you need a precise estimate or a very accurate generalization. Means and medians are not exact numbers; however, they are based on a series of exact numbers, therefore they are precise. Finding the mean (average) is used most often when figuring out students’ grades, the price of an item, and other things such as the daily temperature. Median is used to find the mid-section of a group of numbers, and mode is used to find the most popular term of the series (the number that appears the most often).
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Step-by-step explanation:
1. 250×4=1000
2.125×8=1000
3. 25×40=1000
4. 500×2=1000
5. 200×5=1000
6. 50×20=1000
Answer: (1) The temperature of the water after 20 minutes is 82.8°
(2) The temperature of the water will be 80° after 26.7 min
Step-by-step explanation: Please see the attachments below
