Descriptive Analysis:
Defined as quantitatively describing the main features of a collection of information. Descriptive analysis are distinguished from inferential analysis (or inductive analysis), in that descriptive analysis aim to summarize a sample, rather than use the data to learn about the population that the sample of data is thought to represent. Two types of descriptive measures are:
1. Measures of central tendency: used to report a single piece of information that describes the most typical response to a question.
2. Measures of variability: used to reveal the typical difference between the values in a set of values.
Two types of descriptive analysis are:
1. Univariate analysis: Univariate analysis involves describing the distribution of a single variable, including its central tendency (including the mean, median, and mode) and dispersion (including the range and quantiles of the data-set, and measures of spread such as the variance and standard deviation).
2. Bivariate analysis: Used when a sample consists of more than one variable. Bivariate analysis is not only simple descriptive analysis, but also it describes the relationship between two different variables.
Descriptive statistics provides simple summaries about the sample and about the observations that have been made. In the business world, descriptive statistics provides a useful summary of many types of data. For example, investors and brokers may use a historical account of return behavior by performing empirical and analytical analyses on their investments in order to make better investing decisions in the future.
Inferential Analysis:
Used to generate conclusions about the population’s characteristics based on the sample data. For example to estimate the population mean weight using the sample mean weight. They can use inferential statistics to make judgments of the probability that an observed difference between