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(a) Statistics are aggregate of facts (b) Statistics must be numerically expressed. (c) Statistics are collected for a pre-defined purpose (d) Statistics should be collected in a systematic manner. (e) Statistics are placed in relation to each other.

In statistics and probability theory the Greek small letter mu ? is used to denote a population mean or expected value. For example, the expected value of the mean under the null hypothesis would be denoted by ?0 while the expected value of the alternative hypothesis will be denoted by ?1.

Most people find it difficult, yes. It involves a lot of math but is different from math because you have to deal with probabilities instead of exact numbers. Most people find that conceptually challenging. You'll do fine, though, if you have an analytical mind and diligently study the material.

Statistics is a branch of applied mathematics that involves the collection, description, analysis, and inference of conclusions from quantitative data. The mathematical theories behind statistics rely heavily on differential and integral calculus, linear algebra, and probability theory.

Data is any numerical or. categorical data. Statistics is used to predict and make decisions. Describing is done through. statistical formulas, and analysis is interpretation of this data through statistical formula also.

Statistics is defined as the science of collecting, organizing, presenting, analyzing and interpreting numerical data for the purpose of assisting in. making a more effective decision. Classifications: Depending on how data can be used, statistics is sometimes divided in to two main areas or branches.

We begin by introducing two general types of statistics: Descriptive statistics: statistics that summarize observations. Inferential statistics: statistics used to interpret the meaning of descriptive statistics.