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16. A graph of a cumulative frequency distribution is called
Ogive
Frequency polygon
Pie diagram
Histogram
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17. Which one of the following software is used for Research Analysis
SAP
ERP
SPSS
TALLY
18. In a unimodal and symmetric distribution, the relationship between average is like this
mean> median> mode
mean < median < mode
mean = median = mode
mean> median < mode
19. ------ error is made when the test rejects a hypothesis which is true
Type I
Type II
Both (A) and (B)
None of these
20. The total area of a normal distribution between the average value ± 1.96 of standard deviation is
95.45 %
95 %
99 %
68.34%
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