INTERNATIONAL UNIVERSITY OF BUSINESS AGRICULTURE AND TECHNOLOGY First term examination
STA 240
Full marks: 100 (10x10)
1.
Time: 50 minutes
For the following table, construct a line graph: Months Share index
Aug 200
Sep 350
Oct 400
Nov 150
2.
Find the mean for the series 1000, 2000, 3000, …………, 50000.
3.
Find the two numbers whose HM=32/5 and GM=8.
4.
Find CV of two numbers 5 and 3.
5.
Find CV for the series 1, 2, 3, ………… , 10.
6.
If SD of 1st n natural numbers is √10, what will be the mean?
7.
Find MD and SD of the numbers 0, 1, 2.
8.
For any two numbers, GM=√7 and SD=3.
Dec 50
a) Find the numbers. b) Find HM. c) Find variance. e) Find median.
9.
d) Find AM. f) Find CV.
Construct a steam & leaf plot for the following data: 11,14,16,21,23,24,27,30,31,35,36,37,38,40,41,42,43,50,51
10.
What is the median of the sample 4,5,7,9,6,3,2, 5, 1, 9, 8, 5, 8?
Md. Mortuza Ahmmed