Question

elementary statistics

Answer 1

In statistics we use a small representative "sample" to study a big "population." The reason for this is the cost or even the impossibility of studying the whole population. Statistics emphasizes the methods of collecting data, summarizing and presenting data, and drawing inferences from data.

Elementary statistics consists of following topics

Descriptive Statistics. Describe data, like mean and interquartile range.

Probability. The chance of something happening, like: winning an election; Finding a parking space; It raining on a certain day.

Probability distributions. You’ll be studying data and graphs. Some you may be familiar with, like the normal distribution (the bell curve).

Planning and analyzing experiments. Where you’ll be able to decide if results of studies are valid or not.

Regression analysis and correlation coefficients. You’ll be working with graphs like scatter plots to fit data to equations. You’ll also find future trends.

Tables. You’ll be using z-table and t-table. Tables tell you a lot about probabilities of data distributions.