From the analysis of students’ marks, Mr Adam decided to do one-to-one consultation with his low-ability students and give 5 questions per week as a revision to the rest of his students. Calculate the mark required to join the consultation if 55% of his students were assigned to do the revision.
From the analysis of students’ marks, Mr Adam decided to do one-to-one consultation with his low-ability students and give 5 questions per week as a revision to the rest of his students. Calculate the mark required to join the consultation if 55% of his students were assigned to do the revision.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 2GP
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Transcribed Image Text:1. College X organised a mid-semester test in last September. The marks of 135 students were recorded in the
following table.
Marks
Relative Frequency
8.
0<xs 20
135
31
20 < x< 40
135
41
40 < x S 60
135
60 < x S 80
45
34
80 <xs 100
135
a) Find the upper quartile.
b) Calculate the median, mean and the standard deviation of the marks.
c) Hence, find the Pearson's coefficient of skewness and interpret your answer.
d) State with reason, which of the above measures of location better describes the distribution of the data.
e) From the analysis of students' marks, Mr Adam decided to do one-to-one consultation with his low-ability
students and give 5 questions per week as a revision to the rest of his students. Calculate the mark
required to join the consultation if 55% of his students were assigned to do the revision.
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