This test is about Introductory statistics covering some basics about data, Sample, population, Measure of dispersion, Measure of central tendency, Descriptive Statistics, Inferential Statistics etc. Note that all questions are in Multiple Choice on introductory statistics.

**Question 1:** In inferential statistics, we study

A) the methods to make decisions about population based on sample 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

**Question 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

**Question 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

**Question 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

**Question 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

**Question 6:** Data in the Population Census Report is:

A) Grouped data

B) Ungrouped data

C) Secondary data

D) Primary data

E) Arrayed data

**Question 7:** 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

**Question 8:** Statistic is a numerical quantity, which is calculated from:

A) Population

B) Sample

C) Data

D) Observations

**Question 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

E) Median

**Question 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

E) Bayesian Statistics

**Question 11:** 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

**Question 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

**Question 13:** The algebraic sum of deviations from mean is:

A) Maximum

B) Zero

C) Minimum

D) Undefined

**Question 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

**Question 15:** Which one is the not measure of dispersion.

A) The Range

B) 50th Percentile

C) Inter-Quartile Range

D) Variance

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