All Free Statistics MCQs with Answers
Every Statistics question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
545 questions · page 7 of 55
61. The class ___ are obtained when we divide the sums of the lower and upper class limits by 2?
- A. Limit
- B. Points
- C. Marks
- D. Class boundary
Explanation: The class mark, also called the midpoint, is found by adding the lower and upper class limits and dividing by 2. Class boundaries instead separate adjacent classes and are not averages of the limits.
Correct answer: Marks62. The process of systematic arrangement of data in rows and columns is called ___________________?
- A. Classification
- B. Tabulation
- C. Frequency
- D. Frequency distribaution
Explanation: Tabulation is the systematic presentation of data in rows and columns. Classification only groups data according to common characteristics; it does not necessarily display the groups in a table.
Correct answer: Tabulation63. There are ________ important bases of classification?
- A. Two
- B. Four
- C. Three
- D. Five
Explanation: The four important bases of classification are qualitative, quantitative, chronological, and geographical. They group data by attributes, numerical magnitude, time, and place respectively.
Correct answer: Four64. Class _________ is the difference between two class limit?
- A. Boundary
- B. Class mark
- C. None of these
- D. Class interval
Explanation: The class interval describes the width or range of a class, commonly obtained from the difference between its limits. A class boundary is an adjusted dividing value, while the class mark is the midpoint.
Correct answer: Class interval65. Technical & Trade Journals are the source of ___________ data?
- A. Primary
- B. Secondary
- C. Ungroup data
- D. Group data
Explanation: Technical and trade journals publish information previously collected and made available by another source, so using them provides secondary data. Primary data are collected firsthand by the investigator for the current study.
Correct answer: Secondary66. A table has at least __________ part?
- A. Two
- B. Three
- C. Four
- D. Five
Explanation: A basic statistical table has at least four essential parts: the title, captions, stubs, and body. Additional parts such as source notes or footnotes may be included but are not essential in every table.
Correct answer: Four67. The stub is the containing__________________?
- A. Box head
- B. Column captions
- C. Caption
- D. Row caption
Explanation: The stub is the part of a table containing the row headings or row captions, usually placed in the first column. Boxhead and column captions belong to the headings across the top.
Correct answer: Row caption68. Data arranging into rows and columns are called______________?
- A. Frequency distribution
- B. Classification
- C. Table
- D. Tabulation
Explanation: Tabulation is the process of arranging data systematically in rows and columns. The resulting arrangement is called a table, so table describes the product rather than the process.
Correct answer: Tabulation69. In constructing a histogram which is to be taken along X-axis__________?
- A. Class interval
- B. Class frequency
- C. Class boundaries
- D. Class mark
Explanation: A histogram places class boundaries or continuous class intervals on the X-axis and frequencies on the Y-axis. Class frequency therefore belongs on the vertical axis.
Correct answer: Class boundaries70. A value get which divides a class into two equal parts is called _________________?
- A. Class interval
- B. Open interval
- C. Size
- D. Mid point
Explanation: The midpoint is found by averaging the lower and upper class limits, so it divides the class interval into two equal parts. It is also called the class mark.
Correct answer: Mid point