In a distribution of 10, 20, 30, 40, 50, the x is 30, the sum of deviations from x will be:________?
A: 60
B: 30
C: Zero
D: 15
Questionnaire survey method is used to collect ______?
A. Secondary data
B. Qualitative variable
C. Primary data
D. None of these
A parameter is a measure which is computed from ______?
A. Population data
B. Sample data
C. Test statistics
D. None of these
Primary data and _____ data are same?
A. Grouped
B. Secondary data
C. Ungrouped
D. None of these
The data which have already been collected by some one are called _____?
A. Raw data
B. Array data
C. Secondary data
D. Fictitious data
The number of accidents in a city during 2012 is _____?
A. Discrete variable
B. Continuous variable
C. Qualitative variable
D. Constant
The weights of students in a college/school is a _____?
A. Discrete Variable
B. Continuous Variable
C. Qualitative Variable
D. None of these
Which of the following divides a group of data into four subgroups?
A. Percentiles
B. Deciles
C. Median
D. Quartiles
E. Standard Deviation
The middle value of an ordered array of numbers is the _____?
A. Mode
B. Mean
C. Median
D. Mid Point
According to the empirical rule, approximately what percent of the data should lie within μ±σ?
A. 75%
B. 99.7%
C. 90%
D. 95%
