Reference no: EM1311694
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Annual Income
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Number of Households
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Under $10,000
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20
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$10,000-under $20,000
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45
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$20,000-under $30,000
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70
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$30,000-under $40,000
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30
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$40,000-under $50,000
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15
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$50,000-under $60,000
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12
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$60,000-under $70,000
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8
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Total
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200
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1) For value 10,40,20,50 and 40, value of arithmetic mean is
a).32
b) 40
c) 30
d) 34.5
2) For data values,20,31,45,54,38,33,22,45, and 17, mode is
a) 33
b) 34
c) 38
d) 45
3) Simplest measure of dispersion is the
a) Standard deviation
b) variance
c) Quartile deviation
d) range
4) Largest value in set of data is 240, and lowest value is 100. If resulting frequency distribution is to have 7 classes of equal width, what will be the class width?
a) 12
b) 7
c) 5
d) 20
5) For the value 10,20,30,40 and 50, the average absolute deviation from the mean is
a) 10
b) 15
c) 12
d) 14
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: For value 10,40,20,50 and 40, value of arithmetic mean is? Simplest measure of dispersion is the Standard deviation, variance, Quartile deviation.
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