Question 1
Question
_______is called a data set containing all members of a specified group.
Question 2
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________ is a data set that contains a part, or a subset of a population.
Question 3
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Mean does not require sorting of data, as sorting of data is costly so it can be used for __________numeric data.
Question 4
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The mean cannot be calculated for ________ data, as the values cannot be summed.
Question 5
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Median is __________ by the outliers and for a symmetric distribution, the mean _________median.
Answer
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Affected, Not Equal to
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Unaffected, Equals to
Question 6
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In skewed data, the mean lies further towards the ______ then the median.
Question 7
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Median is ________affected by outliers and skewed data.
Question 8
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Median cannot be identified for the _________ nominal data, as it cannot be logically ordered.
Question 9
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Is it possible for the data set to be multimodal (have more than one mode) ?
Question 10
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Mode can be obtained for _____________ data.
Can be graphically represented with a ____________.
Answer
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Both, Histogram
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Numerical, Histogram
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Categorical, Histogram
Question 11
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For floating data it will be difficult to calculate the _____.
Question 12
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Range is ____________ to outliers and does not use all the observations in a data set.
Answer
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Very sensitive
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Not sensitive
Question 13
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What can be used as a measure of variability if the extreme values are not being recorded exactly?
Question 14
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IQR is ___________ by extreme values.
Question 15
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The advantage of variance is that it treats all deviations from the mean the same regardless of their direction. The squared deviations cannot sum to zero and give the appearance of no variability at all in the data.
Question 16
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Variance gives added weight to outliers, the numbers that are far from the mean. Squaring these numbers can skew the data.
Question 17
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Variance is not easily interpreted as we square the data, changing its dimensions from original one.
Question 18
Question
Standard Deviation can be used to detect ___________.