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11. The house colours of 18 students are shown below. Green Red Blue Blue Yellow Red Black Green Red Yellow Blue Yellow Green Yellow Black Red Green Green (a) Comment on the appropriateness of the line graph below. (b) Find the percentage of students in Black House. (c) Write out the ratio of students in Blue: Red: Green. (d) Assuming that the ratio of students in this sample size is accurate for the population of 792 students, find the total number of students in Blue house, giving your answer to the nearest whole number if applicable.
Sagot :
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