Basic Statistics

The post is about an Online introductory Statistics Quiz. Test your Basic Statistics knowledge on:
✅ Data types (quantitative vs. categorical)
✅ Measures of central tendency (mean, median, mode)
✅ Skewness & outliers (left vs. right skew, detecting extremes)
✅ Relationships between measures (how mean/median/mode shift in different distributions)
✅ Conversion and Normalization of data

Let us start with the Online Introductory Statistics Quiz now.

Online Introductory Statistics Quiz with Answers

• Which of the following is a common file format for data sets?
• When multiple observations are reported for each respondent in the data set, to compute statistics for variables about the respondents, one must:
• The process of converting or mapping data from the initial raw form to another format to prepare it for further analysis goes by several names. What is this process commonly called?
• Which of the following is NOT true?
• Which of these is NOT a method of normalizing data?
• Which of the following is NOT true?
• If a negatively skewed distribution (i.e., skewed to the left) has a median of 50, which of the following statements are true?
• The value of $\Sigma fx$ is 180, $A=22$, and width of the class interval is 5, arithmetic mean is 120. Then observations are
• The value of $\Sigma fx$ is 300, $A=35$, the number of observations is 15, and the width of the class interval is 5; then the arithmetic mean is
• The value of $\Sigma fd$ is 250, $A=25$, number of observations are 12 and width of class interval is 6 then arithmetic mean is
• Criteria of inferential statistics that considers the sum of squared deviations is classified as
• In a negative skewed distribution, the order of mean, median, and mode is as
• A measure that describes the detailed characteristics of the whole data set is classified as
• How the geometric mean, harmonic mean, and arithmetic mean are related is as
• In statistics out of 100, marks of 21 students in final exams are as 90, 95, 95, 94, 90, 85, 84, 83, 85, 81, 92, 93, 82, 78, 79, 81, 80, 82, 85, 76, 85 then mode of data is
• Considering all observations of arithmetic mean, the sum of squares of deviations must be less than
• In a set of observations, unusual lower and higher values are called
• The measure of central tendency, which is calculated by considering the most frequently occurring value as the central value, is classified as
• The method used to compute the average or central value of collected data is considered as
• In measure of central tendency, sample statistic is denoted by

R Programming Language, MCQs General Knowledge

How well do you know Exploratory Data Analysis (EDA)? This interactive Exploratory Data Analysis Quiz tests your understanding of key EDA concepts, including data distributions, outlier detection, visualization techniques (histograms, box plots, scatter plots), and statistical summaries. Whether you’re a student, data scientist, statistician, or researcher, this exploratory data analysis quiz helps sharpen your skills in uncovering insights from raw data. Let us start with the Online Exploratory Data Analysis Quiz now.

Please go to Exploratory Data Analysis Quiz 22 to view the test

Online Exploratory Data Analysis Quiz with Answers

• Which of the following forms of exploratory data analysis generates short summaries about the sample and measures of the data?
• Which of the following forms of exploratory data analysis is a statistical comparison of groups of data?
• Which of the following would NOT be a good use of analytic graphing?
• Plots let you summarize the data (usually graphically) and highlight any broad features
• Which of the following do plots NOT do?
• What do you think is a disadvantage of the Base Plotting System?
• Which of the following is a principle of analytic graphics?
• What is the role of exploratory graphs in data analysis?
• What is the purpose of hierarchical clustering?
• When you’re doing hierarchical clustering, there are strict rules that you MUST follow.
• Average linkage uses the maximum distance between points of two clusters as the distance between those clusters.
• The number of clusters you derive from your data depends on the distance at which you choose to cut it.
• Once you decide basics, such as defining a distance metric and linkage method, hierarchical clustering is deterministic.
• K-means clustering requires you to specify a number of clusters before you begin.
• K-means clustering requires you to specify a number of iterations before you begin.
• Which of the following would be an example of variables correlated to one another?
• Every data set has a single fixed number of clusters.
• K-means clustering will always stop in 3 iterations
• When starting k-means with random centroids, you’ll always end up with the same final clustering.
• Which of the following cliches LEAST captures the essence of dimension reduction?

MCQs General Knowledge, R Programming Language

The quiz is about MCQs Data and Variables with Answers. There are 20 multiple-choice questions covering the topics related to variables, data, types of data (such as discrete or continuous, quantitative or qualitative), and level of measurements. Let us start with the MCQs Data and Variables Statistics Quiz.

Please go to MCQs Data and Variables 22 to view the test

Online MCQs Data And Variables Quiz with Answers

• The age of the individual was recorded at the time of the survey. What type of variable would age be considered?
• The adult indicator variable is coded as a 1 if the individual is 18 or older and a 0 if not. What type of variable would the adult indicator variable be considered?
• In a survey, employees were asked to report their typical daily commute time, in minutes. What type of variable would their response be considered?
• In a survey, employees were asked to report their typical daily mode of transportation to and from work (i.e. Car, Bike, Bus, etc.). What type of variable would their response be considered?
• In a survey, the company wanted to know how employees perceived the work of upper management. Employees were asked to report the satisfaction of upper management using a 1 to 5 scale (with the following representations:

1. Extremely Unsatisfied,
2. Unsatisfied,
3. Neutral,
4. Satisfied,
5. Extremely Satisfied)

• What type of variable would their response be considered? https://gmstat.com
• In a survey, it was reported that Fridays were generally lighter regarding the number of meetings held. Employees were asked to report the number of scheduled meetings they attended the previous Friday. What type of variable would their response be considered?
• In a survey, management was playing around with the idea of having a food truck visit the office once a week and was trying to gauge how much employees would spend to help entice various food truck owners. Employees were asked to report the amount of money they believed they would spend on lunch (in $XX.XX) if a food truck came to the office once a week. What type of variable would their response be considered?
• Library cardholders were asked whether or not they had checked out a book from the library in the past month (yes or no). What type of variable would their response be considered?
• Library cardholders were asked to report the amount of late fees they have been charged in the past year (input in the form of $XX.XX). What type of variable would their response be considered?
• Library cardholders were asked to reflect on the most recent book they checked out and report the genre that it most closely represented (i.e. Science Fiction, Action, Romance, Mystery, etc.). What type of variable would their response be considered?
• The library recently added a new online checkout/renewal system. Library cardholders were asked how many times they had used the new online system. What type of variable would their response be considered?
• Library card holders were asked to report the satisfaction of their library experience during their last visit using a 1 to 5 scale (with the following representations:

1. Extremely Unsatisfied,
2. Unsatisfied,
3. Neutral,
4. Satisfied,
5. Extremely Satisfied).

• What type of variable would their response be considered?
• Focus groups, individual respondents, and panels of respondents are classified as
• Reports on quality control, production, and financial accounts issued by companies are considered as
• The type of rating scale that allows respondents to choose the most relevant option out of other stated options is classified as
• Data which is generated within the company such as routine business activities is classified as
• The scale which is used to determine ratio equality is considered as
• Measurement scale which allows researchers and statisticians to perform certain operations on data collected from respondents is classified as
• The type of questions included in the questionnaire to record responses in which respondents can answer in any way are classified as
• Measurement scale which allows ranking of numbers rather than arithmetic operations on data is classified as

MCQs General Knowledge