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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3 / 50
What effect will the elimination of extreme scores at the bottom of a data set have on the mean? ______
4 / 50
If ∑i=110Xi-50=100 then sample mean X- will be: ________
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7 / 50
If the arithmetic mean of the two numbers X1 and X2 is 5 if X1=3, then X2 is:_________
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9 / 50
The total of all the observations divided by the number of observations is called: ______
10 / 50
11 / 50
Given X1=20 and X2=-20. The arithmetic mean will be: ________
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14 / 50
When the values in a series are not of equal importance, we calculate the: _____________
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16 / 50
The mean of 10 observations is 10. All the observations are increased by 10%. The mean of increased observations will be: ______
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18 / 50
The arithmetic mean of 10 items is 4 and the arithmetic mean of 5 items is 10. The combined arithmetic mean is: ______
19 / 50
20 / 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______
21 / 50
The arithmetic mean is highly affected by: ________
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24 / 50
Scores that differ greatly from the measures of central tendency are called:_________
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26 / 50
The sum of the squares of the deviations about mean divided by the number of observations is: ________
27 / 50
The sample mean X- is an example of a: ________________
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32 / 50
The population mean μ is an example of a: _________
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35 / 50
The sum of deviations is zero when deviations are taken from:________
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40 / 50
If the arithmetic mean of 20 values is 10, then sum of these 20 values is:_____
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43 / 50
If a constant value is added to every observation of data, how would the value of the arithmetic mean behave? ________
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
Step deviation method or coding method is used for computation of the______
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49 / 50
Ten families have an average of 2 boys. How many boys do they have together?
50 / 50
The first step in calculating the median of a discrete variable is to determine the: _______
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