All Free Statistics MCQs with Answers

• A. All possible
• B. Constant
• C. Accuracy
• D. Specific

Explanation: A continuous variable can take any value within an interval, including fractional values such as 2.4 or 2.

• A. Discrete
• B. Specific
• C. Continuous
• D. Constant

Explanation: Measurements such as height, weight and time can vary by arbitrarily small amounts, so they generally produce continuous data.

• A. Quantitative
• B. Primary
• C. Discrete
• D. Secondary

Explanation: Data collected originally by the agency that uses them are primary data.

• A. Short run
• B. Long run
• C. Medium period
• D. None of these

Explanation: Statistical laws describe regularities that emerge from a large number of observations, not necessarily from one short series.

• A. Long run
• B. Plural sense
• C. indefinite
• D. Short run

Explanation: Statistical regularities become dependable when repeated observations are considered over a long period or large number of trials.

• A. variable
• B. Attribute
• C. Constant
• D. None of these

Explanation: A characteristic that remains fixed and does not vary is called a constant.

• A. Fisher
• B. unavoidable
• C. Feet
• D. Achenwall

Explanation: Gottfried Achenwall is generally credited with first using the term “statistics” in the eighteenth century during lectures at a German…

• A. Inferential
• B. Descriptive
• C. Collection
• D. Two

Explanation: Descriptive statistics summarises data through collection, organisation, presentation, and analysis without drawing broader population…

• A. Biology
• B. Three reasons
• C. Hands
• D. Physics

Explanation: Many modern statistical techniques developed in response to practical problems in biology, especially variation, heredity, and population…

• A. In each case
• B. Average
• C. Facts
• D. Field

Explanation: Statistical laws usually describe regularities for groups and are therefore true on average, not necessarily for every individual case.

• A. One
• B. Four
• C. More than value
• D. Resindent

Explanation: A constant has one fixed value throughout the situation being studied. A quantity that can assume different values is a variable.

• A. Research
• B. Statistical
• C. Secondary
• D. Primary

Explanation: Primary data are collected firsthand by the investigator for the specific study, such as through surveys or experiments.

• A. 1/10
• B. 1/1000
• C. 1/100
• D. 100

Explanation: A proportion is expressed as a percentage by multiplying it by 100, since percentage means “per hundred.” For example, 0.35 becomes 35%.

• A. Attribute
• B. Discrete variable
• C. Continuous variable
• D. Constant

Explanation: Marital status is an attribute because it describes a qualitative characteristic such as single, married, or widowed.

• A. Mode
• B. Mean
• C. Median
• D. Mid Point

Explanation: The median is the central value after the observations are arranged in order.

• A. Percentiles
• B. Deciles
• C. Median
• D. Quartiles
• E. Standard Deviation

Explanation: Quartiles divide ordered data into four equal parts, producing Q1, Q2, and Q3 as the dividing points.

• A. Discrete Variable
• B. Continuous Variable
• C. Qualitative Variable
• D. None of these

Explanation: Weight is measured on a continuous scale because it can take fractional values such as 52.4 kg or 52.45 kg.

• A. Discrete variable
• B. Continuous variable
• C. Qualitative variable
• D. Constant

Explanation: The number of accidents is a count and can take only whole-number values such as 0, 1, or 2.

• A. Raw data
• B. Array data
• C. Secondary data
• D. Fictitious data

Explanation: Secondary data are data previously collected by another person or organization for a different or broader purpose.

• A. Population data
• B. Sample data
• C. Test statistics
• D. None of these

Explanation: A parameter describes a population, so it is computed using population data.