In a frequency distribution, the number of observations falling in a class is called: MCQ with Answer and Explanation

Question
In a frequency distribution, the number of observations falling in a class is called:
A. Class width
B. Class mark
C. Class frequency
D. Class limit
Answer: Option C
Solution (By JKSSB Mock Tests)
Class frequency is the count of data points within a particular class interval.
This question belongs to: Accountancy and Statistics Statistics
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Practice More Statistics Questions

Question #1
A box contains 5 defective and 15 non-defective items. Two items are drawn. The probability that both are non-defective is:
A. 15/20 × 14/19 = 21/38
B. 21/38
C. 1 - (5/20)²
D. (15/20)²
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Correct Answer: Option A

Explanation:
P(both non-defective) = (15/20)×(14/19) = 210/380 = 21/38.
This question belongs to: Accountancy and Statistics Statistics
Question #2
Which of the following is a method of collecting primary data?
A. Referring to old records of a company
B. Schedules sent through enumerators
C. Using published journals
D. Extracting data from internet
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Correct Answer: Option B

Explanation:
Schedules filled by enumerators is a primary data collection method; the others are secondary sources.
This question belongs to: Accountancy and Statistics Statistics
Question #3
Life expectancy at birth is denoted in a life table by:
A. q_0
B. l_0
C. e°_0
D. T_0
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Correct Answer: Option C

Explanation:
e°_x represents complete expectation of life at age x. At birth (age 0), it is e°_0.
This question belongs to: Accountancy and Statistics Statistics
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