Question

In: Statistics and Probability

1. You have a friend named Clarence who never heard of statistics before. Explain what statistics...

1. You have a friend named Clarence who never heard of statistics before. Explain what statistics is and how it relates to today's world. Give examples.

2. You are given a list of cholesterol levels and asked to calculate the mean and median. What would make the median a better measure of central tendency than the mean?

3. What is the purpose of looking at Percentiles? Why would you choose this rather than analyzing the mean or median? Give examples.

Solutions

Expert Solution

1. Hey Clarence, let me introduce you to what is statistics?

It is set ofomathematical equation that is used to analyze the event or anythings It help us in mathematical analysis of what is happening around us and in what capacity.

For example

Weather Forecast

Research projects

Financial markets or stock market

Disease predictions

And many more application.

2.Measure of central tendency is a summary measure that describe a whole set of data with a single value that represents the middle of its distribution.

Median is middle value of the distribution.


The median is less changed by outliers and skewed data than the mean, and hence preferred measure of central tendency for the distribution is not symmetrical

3. Percentile is the relative standing of the data out of all the given sets of datas.

For example it doesn't matter for you what is the score average of class, what matters you is what is your rank in class.

Suppose you scored only 10 marks in exam while class average was 80 marks, average marks was good but for you it was a very low score.


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