Statistics

What is statistics?

• The study of stationery object

• The study of mathematical principles

• The science of collecting, analyzing and interpreting data

• The study of celestial bodies

What is the primary purpose of statistics?

• To manipulate data for Visualization

• To draw conclusion from data

• To create data tables

• To generate random numbers

What is the difference between descriptive and inferential statistics

• Descriptive Statistics is used for large dataset, while Inferential statistics is used for small dataset

• Descriptive statistics summarizes and present data, while Inferential statistics Makes predictions and draw meaningful insight.

• Descriptive statistics uses probability distribution, while Inferential statistics uses histogram

• There's no difference; they're interchangeable terms

What is the measure of central tendency that is most affected by outliers?

• Mean

• Median

• Mode

• Range

What does the standard deviation measure in a dataset?

• The range of the data

• The spread of variability of the data

• The difference between the largest and smallest values in the data

• The sum of the data values

What is the purpose of a histogram in Statistics?

• To organize data in alphabetical order

• To display data using vertical bars

• To show the percentage of points above and below a given value

• To group data into intervals and display their frequencies

What is the range of a dataset?

• The average value of the data points

• The spread of variability of the data

• The sum of the data values

• The difference between the largest and smallest values in the data

Which measure of the central tendency is the middle value in an ordered dataset?

• Mean

• Median

• Mode

• Range

In a positively skewed distribution, where is the peak of the curve located?

• On the left side

• On the right side

• In the center

• At the top

What does a P-value represents in hypothesis testing?

• The probability of rejecting a false null hypothesis

• The probability of accepting a true null hypothesis

• The Probability of observing the data if the null hypothesis is true

• The probability of observing the data if the alternative hypothesis is true