Free Descriptive Statistics MCQs with Answers

• A. 4
• B. 5
• C. 6
• D. 7

Explanation: Add the five values and divide by their count: (2 + 4 + 6 + 8 + 10) / 5 = 30 / 5 = 6. The values are symmetrically centered at 6, which also provides a quick check.

• A. Raw data
• B. Arrayed data
• C. Discrete data
• D. Continuous dataTry Statistical Software

Explanation: Data arranged from the smallest value to the largest, or in the reverse order, are called arrayed data. Raw data are unorganized observations, while discrete and continuous describe types of variables.

• A. Cylinder
• B. Cuboid
• C. Cube
• D. None of These

Explanation: The volume of a cube with side length x is x × x × x = x³, so V = x³ identifies a cube in the intended geometric context. Other shapes can have the same numerical volume, but this is the standard formula being tested.

• A. Methods
• B. Data
• C. Science
• D. Meteorology

Explanation: In its plural sense, statistics refers to numerical facts or data collected for analysis. In its singular sense, it refers to the science or methods used to collect, organize, analyze, and interpret data.

• A. R.A Fisher
• B. John Tukey
• C. Karl Pearson
• D. All of the above

Explanation: Karl Pearson is credited with introducing the standard deviation and the coefficient of variation as measures of statistical dispersion. Fisher and Tukey made major contributions elsewhere in statistics, but they are not the expected answer here.

• A. Ronald Fisher
• B. Karl Pearson
• C. John Tukey
• D. None of these

Explanation: Ronald Fisher introduced the term variance in statistical work, particularly through his development of analysis of variance. Pearson is associated with several major statistical measures, but not with introducing this term.

• A. 282,589,933 − 3
• B. 282,589,933 − 1
• C. 282,589,933 − 5
• D. None of these

Explanation: The intended number is 2^82,589,933 − 1, the Mersenne prime known as M82589933. The displayed options appear to have lost the superscript formatting, but option b has the correct exponent and subtraction.

• A. frequency curve
• B. frequency polygon
• C. pie chart
• D. ogive

Explanation: An ogive is the graph of a cumulative frequency distribution, formed by plotting cumulative frequencies against class boundaries. A frequency polygon represents ordinary frequencies, not cumulative frequencies.

• A. John Tukey
• B. Ronald Fisher
• C. Florence Nightingale
• D. W. Edwards Deming

Explanation: Ronald Fisher developed many foundations of modern statistical theory, including experimental design, maximum likelihood, and analysis of variance. Tukey and Deming made major later contributions, while Nightingale is chiefly known for applying statistics to public health.

• A. Primary data
• B. Secondary data
• C. Raw data
• D. None of these

Explanation: Primary data are collected firsthand by the investigator for the specific study, whereas secondary data already exist and were collected by someone else. The word raw refers to unprocessed data and is not determined merely by when they were obtained.