the branch of mathematics that transforms data into useful information for decision makers

collecting, summarizing and describing data

drawing conclusions and making decisions concerning a population based only on sample data

it deals with the analysis and interpretation of data

consists of different statistical tools/test used in the analysis of interval, nominal and ordinal data

an assumption or concenssion made for the sake of argument

an interpretation of a practical situation or condition taken as the ground for action

a procedure consisting a pertinent steps whose major objective is to be able to make a decision based on the data gathered

refers to the statement about THE ABSENCE of any effect claimed for cetain action

a form of hypothesis that is deemed "true" until proven wrong based on experimental data

refers to the assertion CONTRADICTING the null hypothesis

a statement of what a statistical hypothesis is set up to establish

types of error

a type of error that is rejection of the null hypothesis when its true

a type of error that is acceptance of the null hupothesis when its false

the PROBABILITY of rejecting the null when it is true

this value is sometimes called the critical value

the graph of the normally distributed set of data

a theoretical concept whose objective is to be able to explain for some variables the relation beween the intervals of its values and their corresponding probabilities

the degree of symmetry or departures from the symmetry of a set of data

a statistical test can be grouped into?

kinds of statistical test