Question 1: Marks: 2 ________ is useful when the most common item, characteristi
ID: 2953370 • Letter: Q
Question
Question 1: Marks: 2
________ is useful when the most common item, characteristic or value of a data set is required
a) The mode
b) The median
c) The mean
d) None of these
Question: 2 Marks: 2
The mode may be more useful than the mean when there are extreme values in the data set
a) True
b) False
Question: 3 Marks: 2
Frequency distribution of a sample of monthly incomes is as follows
Rupees. Frequency
4000 and less than 8000 7
8000 and less than 10,000 16
10,000 and less than 12,000 28
12,000 and less than 13,000 21
13,000 and less than 14,000 8
If we use histogram to represent the data and a rectangle show the area between 8000 and 10,000 has a height of 8 cm, what is the height of the rectangle showing the area between 10,000 and less than 12,000?
a) 10
b) 12
c) 14
d) 16
Question 4: Marks: 2
The value of sales in a shop is
January 8,000
February 7,500
March 8,200
April 9,100
May 8,500
June 8,400
July 6,200
August 8,100
September 8,200
October 8,100
November 8,400
December 10,000
From this data the standard deviation is
a) 8120.0105
b) 9031.3417
c) 892.5194
d) 9125.1248
Question: 5 Marks: 2
A least squares line of regression to the following data taking X as independent variable
X
1
3
5
6
7
9
10
13
Y
1
2
5
5
6
7
7
8
a) y = 3.308 + 0.215x
b)
X
1
3
5
6
7
9
10
13
Y
1
2
5
5
6
7
7
8
Explanation / Answer
1-A2-B
3-A
4-D
5-C
6-A
7-B
8-A
9-A
10-D
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.