Statas MCQs 15

1. In inferential statistics, we study

A) the methods to make decisions about population based onsample results ✔
B) how to make decisions about mean, median or mode
C) how a sample is obtained from a population
D) None of the above

2.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

3.When data are collected in a statistical study for only a portion or subset of all elements of interest we are using:
A) A sample ✔
B) A Parameter
C) A Population
D) Both b and c

4.In statistics, a sample means
A) A portion of the sample
B) A portion of the population ✔
C) all the items under investigation
D) none of the above

5.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

6.Data in the Population Census Report is:
A) Grouped data
B) Ungrouped data
C) Secondary data
D) Primary data ✔

7.Which of the following is not based on all the 

observations?
A) Arithmetic Mean
B) Geometric Mean
C) Harmonic Mean
D)Mode✔

8.Statistic is a numerical quantity, which is calculated from:
A) Population
B) Sample ✔
C) Data
D) Observations

9.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

10. 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 ✔

11. You asked ve 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 60 inches. This is an example of:
A) Descriptive statistics
B) Inferential Statistics ✔
C) Parameter
D) Raw data

12.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

13.The algebraic sum of deviations from mean is:
A) Maximum
B) Zero ✔
C) Minimum
D) None

14.In statistics, a population consists of:
A) All People living in a country
B) All People living in the are under study
C) All subjects or objects whose✔ characteristics are being studied
D) None of the above

15.Which one is the not measure of dispersion.
A) The Range
B) 50th Percentile ✔
C) Inter-Quartile Range
D) Variance