A. Σu1=1 ƒ ixi2
B. Σni-1 ƒ ixi2
C. Σpi=1 ƒ ixi2
D. Σmi=1 ƒ ixi2
Related Mcqs:
- Statistics are ___________ expressed?
A. Descriptive
B. Ability
C. Qualitatively
D. Quantitatively - Life of a T.V picture tube is a:___________?
A. Discrete variable
B. Continuous variable
C. Qualitative variable
D. Constant - ___________ data are collected for the first time.
A. Research
B. Statistical
C. Secondary
D. Primary - The data obtained very first are called:___________?
A. Primary data
B. Secondary data
C. Raw data
D. None of theseSubmitted by: Nimra Shaheen
- The term variance introduced by ___________?
A. Ronald Fisher
B. Karl Pearson
C. John Tukey
D. None of theseSubmitted by: Nimra Shaheen
- For two independent random variables X & Y, Var (x ± y)=___________?
A. Var(X) + Var (Y)
B. Var(X) – Var (Y)
C. Var (X)±
D. Zero - If 5 dice are rolled 96 times then N. =___________?
A. 5
B. 96
C. 5/96
D. 96/5 - In normal distribution u2 = S2 and u4 =___________?
A. 3S2
B. 3S
C. 3S4
D. 4S2/x - Normal distribution has ___________?
A. 1 parameter
B. 2 parameter
C. 3 parameter
D. 4 parameter - Data which is not arranged in ascending or descending order is called ___________?
A. Raw
B. Cumulative frequency
C. Group
D. Arrangement
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