a. the number of students whom scored 45 to 55 marks b. the number of students whom scored 40 to 60 marks

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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1. 50 students of University took an Entry Exam for Foundation.
Given the mean and standard deviation of marks obtained is 50 marks and 5 marks.
Find
a. the number of students whom scored 45 to 55 marks
b. the number of students whom scored 40 to 60 marks
2. The mean, mode dan variance of distribution are as follows:
Mean :15
Mode:16
Variance: 9
Find the Pearson's coefficient skewness and comment on the results.
a)-13, Negatively skewed
b)-12, Negatively skewed
c) 13 Positively skewed
Transcribed Image Text:1. 50 students of University took an Entry Exam for Foundation. Given the mean and standard deviation of marks obtained is 50 marks and 5 marks. Find a. the number of students whom scored 45 to 55 marks b. the number of students whom scored 40 to 60 marks 2. The mean, mode dan variance of distribution are as follows: Mean :15 Mode:16 Variance: 9 Find the Pearson's coefficient skewness and comment on the results. a)-13, Negatively skewed b)-12, Negatively skewed c) 13 Positively skewed
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