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 24 of 55
231. A Constant can assume _______ value?
- 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.
Correct answer: One232. ___________ data are collected for the first time.
- 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. Secondary data have already been collected by someone else.
Correct answer: Primary233. Proportion becomes percentage when multiplied by___________?
- 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%.
Correct answer: 100234. Marital status of an individual is the example of___________?
- 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. It is not numerical, so it is neither discrete nor continuous.
Correct answer: Attribute235. The middle value of an ordered array of numbers is the____________?
- A. Mode
- B. Mean
- C. Median
- D. Mid Point
Explanation: The median is the central value after the observations are arranged in order. If there are two central values, their arithmetic mean is the median.
Correct answer: Median236. Which of the following divides a group of data into four subgroups?
- 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. Percentiles and deciles divide data into 100 and 10 parts respectively.
Correct answer: Quartiles237. The weights of students in a college/school is a___________?
- 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 is obtained by counting whole units.
Correct answer: Continuous Variable238. The number of accidents in a city during 2012 is____________?
- 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. Counts are therefore discrete variables, unlike measurements such as weight or time.
Correct answer: Discrete variable239. The data which have already been collected by some one are called____________?
- 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. Data collected firsthand by the researcher are called primary data.
Correct answer: Secondary data240. A parameter is a measure which is computed from___________?
- 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. A value calculated from sample data is called a statistic, not a parameter.
Correct answer: Population data