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 20 of 24
191. Which of the following describe the middle part of a group of numbers ?
- A. Measure of Variability
- B. Measure of Central Tendency
- C. Measure of Association
- D. Measure of Shape
Explanation: Measures of central tendency, such as the mean, median, and mode, describe the central or typical location of a group of numbers. Variability describes spread, not the middle.
Correct answer: Measure of Central Tendency192. The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation ?
- A. 60.4%
- B. 48.3%
- C. 35.7%
- D. 27.8%
Explanation: The coefficient of variation is (standard deviation ÷ mean) × 100, so (5 ÷ 14) × 100 = 35.7%. It expresses relative variation as a percentage.
Correct answer: 35.7%193. You asked five of your classmates about their height. On the basis of this information, you states the average height of all student 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, while estimating the average height of all university students generalizes from that sample to a population. Such generalization is inferential statistics, not merely a description of the five heights.
Correct answer: Inferential Statistics194. making a entrance slip in service hospital is the method of collection of data by______________?
- A. Registration
- B. Entry
- C. Correspondents
- D. none of these
Explanation: An entrance slip prepared when a person arrives at a hospital records the person through the registration process. Thus, registration is the relevant method of collecting the data.
Correct answer: Registration195. Results obtained by counting are_____________?
- A. Continuous
- B. Discrete
- C. Both (a) and (b)
- D. None of these
Explanation: Counting produces whole-number values, such as 0, 1, 2, and 3, which are discrete rather than continuous. Continuous measurements can take any value within an interval.
Correct answer: Discrete196. Eyes color of employees is the example of____________?
- A. Continuous variable
- B. Constant variable
- C. Discrete variable
- D. Attribute
Explanation: Eye colour is a qualitative characteristic rather than a numerical measurement, so it is treated as an attribute. It cannot be meaningfully added or measured on a continuous scale.
Correct answer: Attribute197. f1x12 + f2x22 + -----+ fxx42=___________?
- A. Σu1=1 ƒ ixi2
- B. Σni-1 ƒ ixi2
- C. Σpi=1 ƒ ixi2
- D. Σmi=1 ƒ ixi2
Explanation: The repeated terms follow the summation pattern [1m[0mΣfᵢxᵢ², with each frequency multiplied by the square of its corresponding value. Option a is the intended notation, although the displayed subscripts are poorly formatted.
Correct answer: Σu1=1 ƒ ixi2198. Continuous variable can assume __________ value?
- 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. forty-one, subject to measurement precision. Thus it is not restricted to specific or constant values.
Correct answer: All possible199. Usually measurements give rise to ________ data?
- 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. Discrete data usually result from counting whole units.
Correct answer: Continuous200. Data being used by an agency which is originally collected by them are _______ data?
- A. Quantitative
- B. Primary
- C. Discrete
- D. Secondary
Explanation: Data collected originally by the agency that uses them are primary data. Secondary data are obtained from another person's or organisation's prior collection.
Correct answer: Primary