Chapter Terminology
Return to Classroom

Chapter Seven Terms

Chapter Seven Terminology
Hypothesis - In statistics, a hypothesis is a claim or statement about a property of a population. A hypothesis statement may be a claim about parameters such as the mean, standard deviation, population proportion, etc.

Null Hypothesis - A statement about the value of a population parameter that must contain the condition of equality (Equal to, Greater than or equal to, Less than or equal to).

Alternative Hypothesis - The statement that must be true if the null hypothesis is false. Must NOT contain the condition of equality (Not equal to, Greater than, Less than).

P-Value - The probability of getting a value of the sample test statistic that is at least extreme as the one found from the sample data, assuming that the null hypothesis is true.(small p-values represent unusual sample results (p-values that are generally less than or equal to .05. Large p-values represent sample results that are not unusual, larger than .05)

Test Statistic - A value computed from the sample data that is used in making a decision about the rejection of the null hypothesis.