NAPLAN Year 9: Data and Statistics

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Data handling basics

Chris

Australia

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1	Anonyme 7 Septembre 2026	% 75	01:01

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Compléter NAPLAN Year 9: Data and StatisticsVersion en ligne Data handling basics par Chris 1 Year 9 numeracy tasks include interpreting data from surveys . A class collected daily study times for a week : 4 , 6 , 5 , 7 , 8 , 5 , 6 hours . The is found by adding all the and dividing by the number of values . The is the difference between the largest and smallest values . A histogram shows the of times , helping assess variability . A of students met the of studying at least seven hours , while the remainder did not . 2 To tackle real problems , students use to compare quantities . By building an , they visualize how many groups of a given size fit into a total , and then find the quickly . a recipe from four to six servings requires adjusting each ingredient by a factor , preserving the . When two rates are compared , students look for the between them and check consistency across contexts . This approach supports flexible reasoning about grow / shrink patterns and units .