Statistical Discreption of Data Solutions Exercise Set A chaper 13 CA maths solutions
CA foundation maths solutions for Chapter 13 Statistical Discretion of Data exercise Set A are given.
You must study the textbook lesson Statistical Discreptiion very well.
You should observe and practice all example problems and solutions which are given in the textbook.
Chapter 13
Stastical Discreption of Data
Unit 1
Exercise
Set A
Set B
Set C
Chapter 13 exercise Set A solutions CA maths solutions
CA maths solutions
Chapter 13
Stastical Discreption of Data.
Unit 1 Exercise
Set A
Exercise
1. Which of the following statements is false?
a. Statistics is derived from the Latin word ‘Status’
b. Statistics is derived from the Italian word ‘Statiista’
c Statistics is derived from the French word ‘Statistik’
d. None of these
Solution: c
Statistics is derived from the French word ‘Statistik’
2. Statistics is derived in terms of numerical data in the ………
Solution : Plural sense
3. Statistics is applied in …….
Solution: Economics, Business management, Commerce and Industry
4. Statistics is concerned with …..
Answer : Qualitative information and Quantitative information.
5. An attribute is …….
Solution: A Qualitative characteristics
6. Annual income of a person is …….,
Answer: A discrete variable.
7. Marks of a student is an example of …..
Solution: a discrete variable.
8. Nationality of a student is ……
Answer : an attribute.
9. Drinking habit of a person is ……
Answer : an attribute.
10. Age of a person is ……
Answer : a continuous variable.
11. Data collected on religion from the census recports are …….
Answer : secondary data.
12. The data collected on the height of a group of students after recording their heights with a measuring tape are ……
Answer : Primary data.
13. The primary data collected by ……
Answer: Interview method, Observation method and Questionnaire method
14. The quickist method to collect primary data is …..
Answer: Telephonic interview.
15. The best method to collect data, in case of anatural calamity is …..
Answer Personal interview.
16. In case of a rail accident, the appropriate method of data collection is by …..
Solution: Indirect interview.
17. Which method of data, collection covers the widest area ?
Answer : Mailed Questionnaire method.
18. The amount of non-responses is maximum in ……
Answer : Mailed Questionnaire method.
19. Some important souces of secondary data are ……
Answer : International and Government sources.
20. Internal consistency of the collected data can be checked when ……
Answer :A number of related series are given.
21. The accuracy and consistency of data can be verified by ……
Answer : Scrutiny.
22. The mode of presentation of data are ….
Answer : Textual tablulation and diagrammatic.
23. The best method of presentation of data is ….
Answer : Tabular.
24. The most attractive method of data presentation is ……
Answer: Diagrammatic.
25. For tabulation, ‘caption’ is …..
Answer : The upper part of a table that describes the column and sub-column.
26. ‘Stub’ of a table is the …….
Answer : Left part of the table describing the rows.
27. The entire upper part of a table is known as …..
Answer: Box head.
28. The unit of measurement in tabulation is shown in ……
Answer: Box head.
29. In tabulation source of the data, if any, is shown in the …..
Answer: Footnote.
30. Which statement is untrue for tabulation?
Answer ; It facilitates comparison between rows and not columns.
CA foundation maths solutionc exercise Set A
31 Hidden trend, if any, in the data can be noticed in …..
Answer : Diagrammatic representation.
32. Diagrammatic representation of data is done by ……
Answer : Diagrams, Charts and Puctures.
33. The most accurate mode of data presentation is …….
Answer: Tabulation.
34. The chat that uses logarithm of the variable is known as ……
Answer : Ratio chart.
35. Multiple line chart is applied for …..
Answer : Two or more related time series when the variables are expressed in the same unit.
36. Multiple axis line chart is considered when …..
Answer : There is more than one time series and the units of variables are different.
37. Horuzontal bar diagram is used for …..
Answer: Qualitative data and data variying over space.
38. Vertical bar diagram is applicable when ,…
Answer : The data are quantitative and when the data vary over time.
39. Divided bar chart is considered for ….
Answer: Comparing different components of a variable and the relation of different components to the table.
40. In order to compare two or more related series, we consider…….
Answer: Multiple bar chart or grouped bar chart.
41. Pie-diagram is used for …..
Answer: Comparing different components and their relation to the total.
42. A frequency distribution……
Answer: Arranges observations in an increasing order, arranges observation in terms of a number of groups and Relaters to a measurable characteristics.
43. The frequency distribution of continuous variable is known as ……
Answer : Grouped frequency distribution.
44. The distribution of shares is an example of the frequency distribution of …..
Answer : A discrete variable
45 The distribution of profits of a blue ship company relates to …….
Answer : Continuous variable.
46. Mutually exclusive classification …
Answer : Excludes the upper class limit but includes the lower class limit.
47. Mutually inclusive classification is usually meant for ……
Answer: A discrete variable.
48. Mutually exclusive classification is usually meant for …
Answers: A continuous variable.
49. The LCB is …
Answer : A lower limit to LCL
50. The UCB is …..
Answer : An upper limit to UCL
51. Length of a class is …..
Answer : The difference between the UCB and LCB of that class.
52. For particular class boundary , the less than cumulative frequency and more than cumulative frequency add up to ….
Answer : Total frequency.
53. Frequency density corresponding to a class interval is the ratio of …..
Answer : Class frequency to the class length.
54. Relative frequency for a particular class..
Answer : Lies between 0 and 1.
55. Mode of a distribution can be obtained from ……
Answer : Histogram.
56. Median of a distribution can be obtained from …..
Answer : Less than type ogives .
57. A comparison among the class frequencies is possible only in …..
Answer : Histogram.
58. Frequency curve is a limiting from of …
Answer : Frequency polygon and Histogram.
59. Most of the commonly used frequency curves are …..
Answer : Bell shaped.
60. The distribution of profits of a company follows ….
Answer : Bell shapesd frequency curve
Note : You can observe all the solutions. You will be try them in your own way.