Practice GAT Subject Statistics questions with answers and explanations.
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The mode identifies the value or category occurring most often.
A dataset may have one mode, several modes, or no mode.
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The range is the simplest measure of spread.
It depends only on the two most extreme observations.
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Standard deviation is the square root of variance.
Larger values indicate greater dispersion around the mean.
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The IQR measures the spread of the middle 50 percent of data.
It is resistant to extreme observations.
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A statistic summarizes observed sample data.
It may be used to estimate a corresponding population parameter.
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Qualitative variables describe categories rather than numerical amounts.
Blood groups such as A, B, AB, and O are categories.
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The amounts subtracted are 9, 16, and 25, which are 3², 4², and 5².
Subtracting the next square, 6² = 36, gives 50 - 36 = 14.
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The terms are factorials: 1!, 2!, 3!, and 4!.
The next term is 5! = 120.
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The digit 7 is in the thousands place.
Therefore, its place value is 7 × 1,000 = 7,000.
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A prime number has exactly two positive factors: 1 and itself.
The number 29 is not divisible by 2, 3, or 5.
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The common factors of 36 and 48 include 1, 2, 3, 4, 6, and 12.
The greatest of these is 12.
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Multiples of 8 are 8, 16, 24, and so on.
The first multiple also divisible by 12 is 24.
