CBSE Class 11 Economics VBQs Organisation of Data

Multiple Choice Questions

Question. For determining the class frequency, it is necessary that the classes are
(a) independent
(b) mutually exclusive
(c) non-mutually exclusive
(d) None of the above
Answer : B

Question. Frequency of a distribution is always in ……… terms.
(a) absolute
(b) percentage
(c) relative
(d) None of these
Answer : A

Question. Arranging the data in different classes according to a given order is known as a series. 
Choose from the options below.
(a) True
(b) False
(c) Partially true
(d) Incomplete statement
Answer : A

Question. The extreme values of the class are known as limits.
Choose from the options below.
(a) True
(b) False
(c) Partially true
(d) Incomplete statement
Answer : A

Question. The number of observations in a class is called
(a) Interval
(b) Frequency
(c) Array
(d) None of these
Answer : B

Question. Inclusive continuous series cannot be used for further analysis unless converted to exclusive series.
Choose from the options below.
(a) True
(b) False
(c) Partially true
(d) Incomplete statement
Answer : A

Question. In an individual series, each item has
(a) same frequency
(b) different frequency
(c) varied frequency
(d) None of the above
Answer : A

Question. In a discrete series, the number of times an item repeats is known as ……… .
(a) Class frequency
(b) Cumulative frequency
(c) Number
(d) None of the above
Answer : A

Question. The arrangement of raw data in increasing or decreasing order of the magnitude is known as
(a) Interval
(b) Array
(c) Range
(d) None of these
Answer : B

Question. Identify the discrete variable from the given below.
(a) Age of employees
(b) Weight of students
(c) Salary of employees
(d) Children in a family
Answer : D

Question. The frequency distribution of a continuous variable is also known as
(a) Simple frequency distribution
(b) Grouped frequency distribution
(c) Either (a) or (b)
(d) None of the above
Answer : A

Question. In a frequency distribution, each unit of the data can be exactly measured.
Choose from the options below.
(a) True
(b) False
(c) Partially true
(d) Incomplete statement
Answer : B

Question. Which of the following is/are type(s) of continuous frequency distribution?
(a) Inclusive series
(b) Exclusive series
(c) Open-ended series
(d) All of these
Answer : D

Case Based MCQs

Direction Read the following case study and answer questions 61 to 65 on the basis of the same.
Collection of data is an important step in statistics. However, raw data cannot be used unless organised in a meaningful way. Few examples of organisation are given below, observe these carefully and answer the questions.

(a) Production of wheat in India in 2001

(b) Marks of students in Statistics

Question. Which of the following is/are objective(s) of classification?
(a) It helps in summarising the data
(b) It enables further mathematical treatment
(c) It enhances human knowledge
(d) All of the above
Answer : D

Question. Table (a) shows which of the following methods of classification?
(a) Spatial classification
(b) Time series
(c) Quantitative classification
(d) None of the above
Answer : A

Question. As per table (b), if a student has scored 19.5, it will be recorded in which class interval?
(a) 10-19
(b) 20-29
(c) Either (a) or (b)
(d) None of these
Answer : D

Question. Which of the following best describes the classification in table (b)?
(a) Unequal and exclusive
(b) Open-ended and exclusive
(c) Unequal and inclusive
(d) Open-ended and inclusive
Answer : C

Question. In table (b), ……… series is used to arrange the data.
(a) inclusive
(b) exclusive
(c) both (a) and (b)
(d) Neither (a) nor (b)
Answer : A

Very Short Answer type Questions

Question. State the meaning of classification.
Answer : Classification is the grouping of related facts into different classes.

Question. State the meaning of qualitative classification.
Answer : The classification according to qualities or attributes of the data called qualitative classification.

Question. Define discrete series or frequency array.
Answer : A discrete series of frequency array is that series in which data are presented in a way that exact measurement of items are clearly shown.

Question. Write the name of the series which include all items up to its upper limit.
Answer : Inclusive series.

Question. State the meaning of class intervals.
Answer : The class intervals are the lowest and highest values that can be included in the class.