A. Variance > mean
B. Mean < variance
C. Variance ≠ mean
D. None of these
Data which have not been arranged in systematic order is called___________? A. Group data B. Tabular dataC. Raw data D. Undefined data
Major area of statistics today is concerned with drawing of conclusions from__________? A. Samples B. Primary C. Two D. Complete study
The equation of standard normal distribution is f(z)=________? A. 1/σ√2∏e 1/2×2B. 1/σ√2∏e -1/2×2 C. 1/√2∏ D. 1/σ√2∏
Quartile deviation is not capable of manipulation______________? A. Easy B. mathematically C. AbjectlyD. Algebraic
The weighty system changed with _______________? A. Yearly B. BaselyC. Timely D. Averagely
Which of the following is an assumption underlying the use of the t-distribution ? A. The sample are drawn from a normally distributed population. B. The variance of the population is known C. All above D. s (sample standard deviation) is an unbiased estimate of the population variance.