STT205
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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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The sum of deviations taken from mean is: _______________
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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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If a constant value is added to every observation of data, how would the value of the arithmetic mean behave? ________
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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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If ∑i=110Xi-50=100 then sample mean X- will be: ________
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Step deviation method or coding method is used for computation of the______
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When all the values in a series occur the equal number of times, then it is not possible to calculate the:__________
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The median is considered a robust measure because it is resistant to: ________
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Sum of absolute deviations of the values is least when deviations are taken from: ________
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When the values in a series are not of equal importance, we calculate the: _____________
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The sum of deviations is zero when deviations are taken from:________
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Y. Which of these is closer to the mode for a skewed distribution?
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The arithmetic mean is highly affected by: ________
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Ten families have an average of 2 boys. How many boys do they have together?
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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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If the smallest observation in a data is decreased, the average which is not affected 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 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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The population mean μ is an example of a: _________
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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 sample mean X- is an example of a: ________________
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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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The suitable average for qualitative data is: ________
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Scores that differ greatly from the measures of central tendency are called:_________
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The elimination of extreme scores at the top of the set has the effect of:_________
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The total of all the observations divided by the number of observations is called: ______
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The first step in calculating the median of a discrete variable is to determine the: _______
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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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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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