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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Any measure indicating the Centre of a set of data, arranged in an increasing or decreasing order of magnitude, is called a measure of: ______
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Given X1=20 and X2=-20. The arithmetic mean will be: ________
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What effect will the elimination of extreme scores at the bottom of a data set have on the mean? ______
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14. Which of these is closer to the mode for a skewed distribution?
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If the smallest observation in a data is decreased, the average which is not affected is: ____
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If the arithmetic mean of 20 values is 10, then sum of these 20 values is:_____
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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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The median is considered a robust measure because it is resistant to: ________
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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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If ∑i=110Xi-50=100 then sample mean X- will be: ________
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The sum of deviations is zero when deviations are taken from:________
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The sample mean X- is an example of a: ________________
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Scores that differ greatly from the measures of central tendency are called:_________
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The frequency distribution of the hourly wage rate of 60 employees of a paper mill is as follows: The mean wage rate is:N______
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If the arithmetic mean of the two numbers X1 and X2 is 5 if X1=3, then X2 is:_________
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The sum of the squares of the deviations of the values of a variable is least when the deviations are measured from: ____________
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Ten families have an average of 2 boys. How many boys do they have together?
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The total of all the observations divided by the number of observations is called: ______
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When the values in a series are not of equal importance, we calculate the: _____________
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The first step in calculating the median of a discrete variable is to determine the: _______
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The suitable average for qualitative data is: ________
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The sum of deviations taken from mean is: _______________
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The sum of the squares of the deviations about mean divided by the number of observations is: ________
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The arithmetic mean is highly affected by: ________
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