Find the 1st quartile, 2nd quartile, third quartile and the interquartile range of the following data set
Question:
Find the 1st quartile, 2nd quartile, third quartile and the interquartile range of the following data set
72, 74, 75, 77, 79, 82, 83, 87, 88, 90, 91, 91, 91, 92, 96, 97, 97, 98, 100
The 1st Quartile :
The 2nd Quartile :
The 3rd Quartile :
The IQR :
Q2)
According to the empirical rule, if a population has a normal distribution, approximately what percentage of values is within one, two and three standard deviation of the mean?
One standard deviation = 68.3% | Yes/No |
Two standard deviation = 95.45% | Yes/No |
One standard deviation = 95.45% | Yes/No |
Three standard deviation = 99.73% | Yes/No |
Three standard deviation = 68.3% | Yes/No |
Two standard deviation = 99.73% yes/no |
Q3)
If the scores on a test have a mean of 26 and a standard deviation of 4, what is the z-score for a score of 18?
The z-score :
Q4)
Consider the data a sample shown below:
1.53 1.50 1.37 1.51 1.55 1.42 1.41 1.48
Find the range, variance, mean and standard deviation
The Mean:
The Standard deviation:
The Range:
Q5)
Of the following Z-score values, which one represents the location closest to the mean?
Select one:
a. Z = - 0.5
b. Z = - 1.0
c. Z = + 0.5
d. Z = + 1.00
e. Z = - 0.1
Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook
ISBN: 9781108407304
1st Edition
Authors: Dean Chalmers, Julian Gilbey