The bar graph shows the number of books read by 4 students in a month: A = 18, B = ?, C = 22, D = 15. The total is 80 books. The four students set themselves a new target equal to twice the original average. Find the new target per student.
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Data Analysis
Five MCQs on Data Analysis. Pick an answer, see the specific misconception. The diagnosis comes after the score.
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The bar graph shows the masses of 4 boxes A, B, C and D. Their total mass is 48 kg. A fifth box, Box E, weighs 4 kg MORE than the average mass of boxes A, B, C and D. Find the average mass of all 5 boxes.