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
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2 / 50
If the smallest observation in a data is decreased, the average which is not affected is: ____
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4 / 50
Scores that differ greatly from the measures of central tendency are called:_________
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6 / 50
The sum of the squares of the deviations of the values of a variable is least when the deviations are measured from: ____________
7 / 50
8 / 50
If a constant value is added to every observation of data, how would the value of the arithmetic mean behave? ________
9 / 50
Given X1=20 and X2=-20. The arithmetic mean will be: ________
10 / 50
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13 / 50
Ten families have an average of 2 boys. How many boys do they have together?
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16 / 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:____
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18 / 50
When all the values in a series occur the equal number of times, then it is not possible to calculate the:__________
19 / 50
The population mean μ is an example of a: _________
20 / 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: ______
21 / 50
The arithmetic mean is highly affected by: ________
22 / 50
Sum of absolute deviations of the values is least when deviations are taken from: ________
23 / 50
The elimination of extreme scores at the top of the set has the effect of:_________
24 / 50
25 / 50
If ∑i=110Xi-50=100 then sample mean X- will be: ________
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27 / 50
What effect will the elimination of extreme scores at the bottom of a data set have on the mean? ______
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29 / 50
29. Which of these is closer to the mode for a skewed distribution?
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32 / 50
The first step in calculating the median of a discrete variable is to determine the: _______
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The median is considered a robust measure because it is resistant to: ________
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35 / 50
If the arithmetic mean of 20 values is 10, then sum of these 20 values is:_____
36 / 50
If the arithmetic mean of the two numbers X1 and X2 is 5 if X1=3, then X2 is:_________
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42 / 50
The arithmetic mean of 10 items is 4 and the arithmetic mean of 5 items is 10. The combined arithmetic mean is: ______
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44 / 50
The sum of deviations taken from mean is: _______________
45 / 50
Step deviation method or coding method is used for computation of the______
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47 / 50
The suitable average for qualitative data is: ________
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49 / 50
50 / 50
When the values in a series are not of equal importance, we calculate the: _____________
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