ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
STT205
1 / 50
The total of all the observations divided by the number of observations is called: ______
2 / 50
3 / 50
The sum of deviations is zero when deviations are taken from:________
4 / 50
5 / 50
The suitable average for qualitative data is: ________
6 / 50
7 / 50
8 / 50
The elimination of extreme scores at the top of the set has the effect of:_________
9 / 50
10 / 50
11 / 50
12 / 50
The sample mean X- is an example of a: ________________
13 / 50
Sum of absolute deviations of the values is least when deviations are taken from: ________
14 / 50
15 / 50
16 / 50
17 / 50
18 / 50
The frequency distribution of the hourly wage rate of 60 employees of a paper mill is as follows: The mean wage rate is:N______
19 / 50
20 / 50
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22 / 50
When the values in a series are not of equal importance, we calculate the: _____________
23 / 50
Any measure indicating the Centre of a set of data, arranged in an increasing or decreasing order of magnitude, is called a measure of: ______
24 / 50
If a constant value is added to every observation of data, how would the value of the arithmetic mean behave? ________
25 / 50
Step deviation method or coding method is used for computation of the______
26 / 50
27 / 50
The arithmetic mean of 10 items is 4 and the arithmetic mean of 5 items is 10. The combined arithmetic mean is: ______
28 / 50
If the arithmetic mean of the two numbers X1 and X2 is 5 if X1=3, then X2 is:_________
29 / 50
30 / 50
What effect will the elimination of extreme scores at the bottom of a data set have on the mean? ______
31 / 50
Given X1=20 and X2=-20. The arithmetic mean will be: ________
32 / 50
The midpoint of the values after they have been ordered from the smallest to the largest or the largest to the smallest is called:____
33 / 50
Ten families have an average of 2 boys. How many boys do they have together?
34 / 50
The sum of deviations taken from mean is: _______________
35 / 50
36 / 50
37 / 50
38 / 50
If ∑i=110Xi-50=100 then sample mean X- will be: ________
39 / 50
40 / 50
If the smallest observation in a data is decreased, the average which is not affected is: ____
41 / 50
42 / 50
When all the values in a series occur the equal number of times, then it is not possible to calculate the:__________
43 / 50
44 / 50
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48 / 50
The sum of the squares of the deviations of the values of a variable is least when the deviations are measured from: ____________
49 / 50
49. Which of these is closer to the mode for a skewed distribution?
50 / 50
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