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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238 questions · page 18 of 24
171. You asked five of your classmates about their height. On the basis of this information, you stated that the average height of all students in your university or college is 67 inches. This is an example of ?
- A. Descriptive statistics
- B. Inferential Statistics
- C. Parameter
- D. Population
Explanation: The five classmates form a sample, and the statement extends their average height to all university or college students. Drawing a conclusion about a population from sample information is inferential statistics.
Correct answer: Inferential Statistics172. Which one of the following measurement does not divide a set of observations into equal parts ?
- A. Quartiles
- B. Standard Deviations
- C. Percentiles
- D. Deciles
- E. Median
Explanation: Quartiles, deciles, percentiles, and the median are positional measures that divide ordered data into specified parts. Standard deviation measures spread and does not divide observations into equal groups.
Correct answer: Standard Deviations173. Which of the following is not based on all the observations ?
- A. Arithmetic Mean
- B. Geometric Mean
- C. Harmonic Mean
- D. Weighted Mean
- E. Mode
Explanation: The mode is determined by the most frequent value, so it does not require every observation in the calculation. Means use the values, and a weighted mean also uses the observations with assigned weights.
Correct answer: Mode174. The height of a student is 60 inches. This is an example of________________?
- A. Qualitative data
- B. Categorical data
- C. Continuous data
- D. Discrete data
Explanation: Height is continuous because it can take any value within a range, including fractional inches such as 60.2 or 60.25. Recording it as 60 does not change the nature of the measurement.
Correct answer: Continuous data175. Which of these is a relative measure of dispersion_____________?
- A. Standard Deviation
- B. Variance
- C. Coefficient of Variation
- D. None of these
Explanation: The coefficient of variation is relative because it expresses standard deviation in relation to the mean, usually as a percentage. Standard deviation and variance are absolute measures of dispersion.
Correct answer: Coefficient of Variation176. Which one is the not measure of dispersion?
- A. The Range
- B. 50th Percentile
- C. Inter-Quartile Range
- D. Variance
Explanation: The 50th percentile is the median, a measure of central tendency rather than dispersion. Range, interquartile range, and variance all describe spread in the data.
Correct answer: 50th Percentile177. In statistics, conducting a survey means_____________?
- A. Collecting information from elements
- B. Making mathematical calculations
- C. Drawing graphs and pictures
- D. None of the above
Explanation: Conducting a survey involves collecting information from selected elements or respondents according to a planned method. Calculations and graphs are later stages of analysing or presenting the collected information.
Correct answer: Collecting information from elements178. Which branch of statistics deals with the techniques that are used to organize, summarize, and present the data?
- A. Advanced Statistics
- B. Probability Statistics
- C. Inferential Statistics
- D. Descriptive Statistics
- E. Bayesian Statistics
Explanation: Descriptive statistics organizes, summarizes, and presents observed data using tables, graphs, and numerical measures. Inferential statistics instead uses sample data to draw conclusions about a population.
Correct answer: Descriptive Statistics179. Data in the Population Census Report is____________?
- A. Grouped data
- B. Ungrouped data
- C. Secondary data
- D. Primary data
- E. Arrayed data
Explanation: Census information is collected firsthand by surveying every unit of the population, so it is classified as primary data. It may become a secondary source for someone who later uses the published report, but the census data itself is primary.
Correct answer: Primary data180. In descriptive statistics, we study______________?
- A. The description of decision making process
- B. The methods for organizing, displaying, and describing data
- C. How to describe the probability distribution
- D. None of the above
Explanation: Descriptive statistics organizes, presents, and summarizes observed data using methods such as tables, graphs, averages, and measures of variation. Decision-making about a population belongs mainly to inferential statistics.
Correct answer: The methods for organizing, displaying, and describing data