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
2 / 50
The mean of 10 observations is 10. All the observations are increased by 10%. The mean of increased observations will be: ______
3 / 50
The sum of deviations is zero when deviations are taken from:________
4 / 50
5 / 50
6 / 50
7 / 50
8 / 50
If the arithmetic mean of 20 values is 10, then sum of these 20 values is:_____
9 / 50
10 / 50
The total of all the observations divided by the number of observations is called: ______
11 / 50
12 / 50
13 / 50
14 / 50
15 / 50
15. Which of these is closer to the mode for a skewed distribution?
16 / 50
17 / 50
The elimination of extreme scores at the top of the set has the effect of:_________
18 / 50
If the smallest observation in a data is decreased, the average which is not affected is: ____
19 / 50
The population mean μ is an example of a: _________
20 / 50
21 / 50
The sum of the squares of the deviations about mean divided by the number of observations is: ________
22 / 50
Ten families have an average of 2 boys. How many boys do they have together?
23 / 50
24 / 50
The median is considered a robust measure because it is resistant to: ________
25 / 50
Sum of absolute deviations of the values is least when deviations are taken from: ________
26 / 50
The arithmetic mean of 10 items is 4 and the arithmetic mean of 5 items is 10. The combined arithmetic mean is: ______
27 / 50
28 / 50
When the values in a series are not of equal importance, we calculate the: _____________
29 / 50
If ∑i=110Xi-50=100 then sample mean X- will be: ________
30 / 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: ______
31 / 50
32 / 50
The sum of the squares of the deviations of the values of a variable is least when the deviations are measured from: ____________
33 / 50
34 / 50
The sample mean X- is an example of a: ________________
35 / 50
36 / 50
Step deviation method or coding method is used for computation of the______
37 / 50
The arithmetic mean is highly affected by: ________
38 / 50
39 / 50
40 / 50
What effect will the elimination of extreme scores at the bottom of a data set have on the mean? ______
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42 / 50
If a constant value is added to every observation of data, how would the value of the arithmetic mean behave? ________
43 / 50
When all the values in a series occur the equal number of times, then it is not possible to calculate the:__________
44 / 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:____
45 / 50
46 / 50
47 / 50
Scores that differ greatly from the measures of central tendency are called:_________
48 / 50
49 / 50
50 / 50
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