Free Descriptive Statistics MCQs with Answers
238 Descriptive Statistics MCQs from Statistics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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31. The process of systematic arrangement of data into rows and columns is called _________?
- A. Bar chart
- B. Classification
- C. Tabulation
- D. None of these
Explanation: Tabulation is the systematic presentation of data in rows and columns. Classification groups data into categories, but does not specifically mean arranging them in a table.
Correct answer: Tabulation32. Class interval size is the different between the upper and lower class_________ of a class?
- A. Boundary
- B. Limits
- C. Marks
- D. Class Interval
Explanation: Class interval size is found by subtracting the lower class boundary from the upper class boundary. Boundaries remove gaps between adjoining classes, so they are preferred to limits for this calculation.
Correct answer: Boundary33. Data which have been arranged in ascending or descending order is called ________ data?
- A. Group data
- B. Classify
- C. Array
- D. ungrouped data
Explanation: An array is data arranged in ascending or descending order. Ungrouped data may be listed in any order, so it is not necessarily an array.
Correct answer: Array34. ____________ use the division of a circle into different sectors?
- A. Frequency Polygon
- B. Conversion Graphs
- C. Sector Graph
- D. Line Graph
Explanation: A sector graph, also called a pie chart, divides a circle into sectors whose sizes represent different categories or proportions. A frequency polygon and line graph use plotted points and lines instead.
Correct answer: Sector Graph35. The graphs of the symmetrical distribution is _____________?
- A. J- shaped
- B. U- shaped
- C. Bell- shaped
- D. None of these
Explanation: A symmetrical distribution has matching left and right sides around its centre, and the usual graphical form is bell-shaped. J-shaped and U-shaped curves are asymmetrical or have different concentration patterns.
Correct answer: Bell- shaped36. In pie-chart, the arrangement of the angles of the different sectors generally ________________?
- A. Anti-clockwise
- B. Arrayed
- C. Clock-wise
- D. Alternative
Explanation: In a standard pie chart, sectors are usually drawn successively in a clockwise direction from a chosen starting radius. The sectors represent categories, while their angles represent the corresponding frequencies or percentages.
Correct answer: Clock-wise37. Cumulative frequencies are_________________?
- A. Increasing
- B. Non- increasing
- C. Decreasing
- D. None of these
Explanation: A cumulative frequency is formed by repeatedly adding frequencies, so it cannot decrease as classes are added. It may remain unchanged when a class has zero frequency, making it non-decreasing.
Correct answer: Increasing38. 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: Marks39. 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: Tabulation40. 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: Four