f1x12 + f2x22 + —————+ fxx42=___________?
f1x12 + f2x22 + —————+ fxx42=___________?
A. Σu1=1 ƒ ixi2
B. Σni-1 ƒ ixi2
C. Σpi=1 ƒ ixi2
D. Σmi=1 ƒ ixi2
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When data are collected in a statistical study for only a portion or subset of all elements of interest we are using?
When data are collected in a statistical study for only a portion or subset of all elements of interest we are using?A. A sample
B. A Parameter
C. A Population
D. Both b and cThe critical value of a test statistic is determined from_____________?
The critical value of a test statistic is determined from_____________?A. The sampling distribution of the statistics assuming Null Hypothesis
B. calculations based on many actual repetitions of the same Experiment
C. The sampling distribution of the statistic assuming Alternative Hypothesis.
D. Non of theseIf P(B/A)= 0.25 and P(A∩B) = 0.2 then P(A) will equal to _______________?
If P(B/A)= 0.25 and P(A∩B) = 0.2 then P(A) will equal to _______________?A. 0.05
B. 0.75
C. 0.8
D. 0.45Group data formula for mode _______?
Group data formula for mode _______?A. 1+ fm – f2/f1 – f2 x h
B. 1+ f1 – f2/f2 – fm x h
C. 1 + fm – f1/ (fm – f1) + (fm1 – f2) x h
D. 1+ fm1 – f2/f1 – fm x hThe graphs of the symmetrical distribution is _____________?
The graphs of the symmetrical distribution is _____________?A. J- shaped
B. U- shaped
C. Bell- shaped
D. None of theseThe mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation ?
The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation ?A. 60.4%
B. 48.3%
C. 35.7%
D. 27.8%