This Math quiz is called 'Data Handling - Averages 1' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.
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This Math quiz about averages in data handling looks at the median (the middle value of a data set) and the range. One way of analyzing information is to look at how the data is spread out or distributed around some sort of average.
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Find this by adding the two middle values together then divide by 2. If both middle values are the same, that IS the median
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(22 + 24) ÷ 2 = 23
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This is qualitative data which cannot be arranged in size order, so there is no median
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Largest = 19, smallest = 10, 19 - 10 = 9
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In order: 10, 11, 12, 15, 17, 19. The median is halfway between 12 and 15. (12 + 15) ÷ 2 = 13.5
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The median is lower because two smaller values have been added below the old median
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The range is bigger because the largest and smallest values have both changed
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Because it lies outside the region of most other values
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A larger range shows the values are more spread out and more varied
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