Online Test — Organisation of Data
15 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 15
Arranging raw data into groups by common characteristics is called:
Collection
Classification
Interpretation
Sampling
Explanation: Classification arranges data into groups by common characteristics.
Question 2 of 15
Grouping data by place or region is ____ classification.
Chronological
Geographical
Qualitative
Quantitative
Explanation: By place/region is geographical classification.
Question 3 of 15
Grouping data by time (year by year) is ____ classification.
Geographical
Chronological
Qualitative
Numerical
Explanation: By time is chronological classification.
Question 4 of 15
Grouping people by literacy (literate/illiterate) is ____ classification.
Quantitative
Qualitative
Chronological
Geographical
Explanation: By an attribute (literacy) is qualitative classification.
Question 5 of 15
A measurable characteristic that takes different values is a:
Constant
Variable
Frequency
Tally
Explanation: Such a characteristic is a variable.
Question 6 of 15
The number of members in a family is a ____ variable.
Continuous
Discrete
Qualitative
Constant
Explanation: It takes only whole values — a discrete variable.
Question 7 of 15
Height of students is a ____ variable.
Discrete
Continuous
Qualitative
Constant
Explanation: Height can take any value in a range — continuous.
Question 8 of 15
The number of times a value occurs is its:
Class size
Frequency
Mid-point
Range
Explanation: Frequency is how many times a value occurs.
Question 9 of 15
For the class 30–40, the class size is:
10
30
40
70
Explanation: Class size = 40 − 30 = 10.
Question 10 of 15
For the class 30–40, the mid-point (class mark) is:
30
35
40
70
Explanation: Mid-point = (30 + 40) ÷ 2 = 35.
Question 11 of 15
In which method are both class limits included and gaps appear between classes?
Inclusive method
Exclusive method
Tally method
Sample method
Explanation: The inclusive method includes both limits and leaves gaps.
Question 12 of 15
In the exclusive class 20–30, a value of exactly 20 goes into:
10–20
20–30
Both
Neither
Explanation: The lower limit is included, so 20 falls in 20–30.
Question 13 of 15
The exclusive method is best suited to ____ data.
Discrete
Continuous
Qualitative
Geographical
Explanation: The exclusive method, with no gaps, suits continuous data.
Question 14 of 15
In a frequency table, the sum of all frequencies equals the:
Number of classes
Number of observations
Largest value
Class size
Explanation: Frequencies add up to the total number of observations.
Question 15 of 15
The running total of frequencies is called the ____ frequency.
Relative
Cumulative
Mid
Class
Explanation: The running total is the cumulative frequency.