All Free Statistics MCQs with Answers

• A. J- shaped
• B. U- shaped
• C. Bell- shaped
• D. V- shaped

Explanation: When frequencies rise toward one end of the distribution, the plotted curve has a J shape, or a reverse-J shape depending on the…

• A. Frequency polgon
• B. Ogive
• C. Pie chart
• D. Histgram

Explanation: Joining the midpoints of the tops of adjacent histogram rectangles produces a frequency polygon.

• A. Four
• B. One
• C. Three
• D. Two

Explanation: The class mark is the midpoint, calculated as (lower limit + upper limit) ÷ 2. It therefore divides a class interval into two equal parts.

• A. Primary
• B. Unofficial
• C. Group data
• D. None of these

Explanation: Primary data are collected firsthand by the investigator directly from respondents or informants.

• A. Class interval
• B. class mark
• C. class frequency
• D. Mid point

Explanation: The class interval is the width of a class, found by subtracting its lower boundary from its upper boundary.

• A. Vertical bars
• B. Simple bar
• C. Horizontal bars
• D. Pie chart

Explanation: Horizontal bars are useful for qualitative categories, especially when category names are long, because the labels remain easy to read.

• A. Portions of column
• B. Vertical column
• C. Column table
• D. Column caption

Explanation: The heading identifying the contents of a column is called its column caption.

• A. Terms
• B. Alternate class
• C. Same class
• D. Corresponding class

Explanation: A frequency table pairs each class with the frequency belonging to that class.

• A. Group data
• B. Tabular data
• C. Raw data
• D. Undefined data

Explanation: Raw data are observations collected in their original form before sorting, grouping, or tabulation.

• A. Lowest
• B. Smallest
• C. Biggest
• D. Middlest

Explanation: Range measures spread by subtracting the smallest observation from the largest observation: Range = largest value − smallest value.

• 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.

• 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. 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.

• 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…

• 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.

• 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.

• 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. 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.

• 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.

• 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.