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 6 of 55
51. Cumulative frequency is the frequency _________ than the upper class boundary of a class?
- A. Distribution
- B. Curve
- C. Greater
- D. Less
Explanation: In a less-than cumulative frequency, frequencies are added for observations below the upper class boundary. Thus the cumulative frequency is less than the upper boundary value in the stated formulation.
Correct answer: Less52. if we connect the mid point of rectangles in a histogram with a series of lines, we get __________
- A. Mid point
- B. Interval
- C. Frequency curve
- D. Frequency Polygon
Explanation: Joining the midpoints of the tops of histogram rectangles produces a frequency polygon. A frequency curve is obtained when the polygon is smoothed rather than left as connected straight segments.
Correct answer: Frequency Polygon53. The smallest and the largest value of any given class of a frequency distribution are called ___________?
- A. Class marks
- B. Class interval
- C. Mid point
- D. Class limit
Explanation: The lower and upper values that define the ends of a class are its class limits. The class mark or midpoint is instead the value halfway between those limits.
Correct answer: Class limit54. 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: Tabulation55. 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: Boundary56. 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: Array57. ____________ 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 Graph58. 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- shaped59. 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-wise60. 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: Increasing