Question 35 Not yet answered Marked out of 20 '37 Flag question Question 36 Not yet answered Marked out of 20 \\l' Flag question The reading score for a group of students is as follows: 5812131515161?'|8202325 What is the lower quartile for this data set? Answer: The opinion on the quality ofa school playr was found by randomly selecting 6 people from the audience and asking them to rate the play out of 20. The scores given by the 6 people were as follows: 6 9 10 11 11 13 The mean score was calculated to be 10. The sum ofsquared differences from the mean, 2 [zEF, was calculated to be 28. What is the standard deviation of the sample of opinions? Give your answer to 2 decimal places Answer: ll A pie chart shows the proportion of boys and girls at a coeducational school of 540 students. If the angle of the sector for boys is 'IZO degrees. how many boys are there at the school? Answer: Expand the following expression and nd the coefficient ofa: 4:l?7(5 +23}