Question Ariel is taking an exam in math class. One of the problems on the exam requires them to find the average of a set of five numbers. How can Polya's four steps be used to help solve the problem? Select the correct answer below: Decide the best way to find the average of the five numbers. Use that method to find the average. Then check the answer to make sure that it is correct. Review the problem and record the five numbers. Decide the best way to find the average of those numbers. Use that method to find the average. Then check the answer to make sure that it is correct. Review the problem and record the five numbers. Decide the best way to find the average of those numbers. Then use that method to find the average. Record the five numbers and find their sum. Then divide that sum by five to find the average.
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To solve the problem using Polya's four steps, we will follow this structured approach: ** Show more…
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The division is the opposite of multiplication. If 5Ă—2=10, then 10Ă·5=2 and 10Ă·2=5. Division is necessary to calculate averages, which are very important in economics. Use division to determine the average in the following problem. At a bicycle manufacturer, it costs $72 to make the first bicycle, $83 to make the second, and $77 to make the third. What is the average cost per bicycle? Give your answer to two decimals. With an average, you add everything up and then divide the total by the number of items you are adding. This gives every number equal weight in the average. But what if you want to weight one item more than others? You will use a weighted average. This can be used, for example, to determine your grade in a class. Follow these steps to find the weighted average in the problem below. First, convert each percentage to a decimal. Then, multiply each percentage in decimal form by its respective grade. And lastly, add everything up to find the weighted average. For example, Emily received a 67 on her first economics exam, which counts for 20% of her grade; an 84 on her second exam, which counts for 30% of her grade; and a 78 on her third exam, which counts for 50% of her grade. What is her weighted average in the class?
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46. Alden is a Grade 7 student who is tasked to show his solution to the problem, "Given the scores of the students in Mathematics shown below, calculate its mean." Score Frequency 41 - 45 1 36 - 40 8 31 - 35 8 26 - 30 14 21 - 25 7 16 - 20 2 Total 40 The solution of Alden is shown below: Score f x fx 41 - 45 1 43 44 36 - 40 8 38 46 31 - 35 8 33 41 26 - 30 14 28 42 21 - 25 7 23 30 16 - 20 2 18 20 Total 40 223 Where: f = frequency x = class mark fx = product of frequency and classmark i = interval i = 5 Mean = 223 / 40 = 5.575 Based on the solution given by Alden, is the computed mean correct? A) Yes. He followed the process correctly. B) No. He should divide 40 by 5 and no need to add more columns. C) No. The formula he used is for median not for mean. D) No. He added the frequency and class mark instead of multiplying it.
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(Count positive and negative numbers and compute the average of numbers) Write a program that reads an unspecified number of integers, determines how many positive and negative values have becn read, and computes the total and average of the input values (not counting zeros). Your program ends with the input 0. Display the average as a floating-point number. Here is a sample run: Enter an integer, the input ends if it is 0:1 Enter an integer, the input ends if it is 0:2 Enter an integer, the input ends if it is 0:-1 Enter an integer, the input ends if it is 0: 3 Enter an integer, the input ends if it is 0: The number of positives is 3 The number of negatives is 1 The total is 5 The average is 1.25 Enter an integer, the input ends if it is 0: 0 You didn't enter any number
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