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Means Testing: The Procedures

Before proceeding to conduct a hypothesis test between two sample means, we must determine certain characteristics and parameters about the samples, some of which you will recognize from previous lessons.

Question no. 1: Are the samples related in some way?

YES.
If a relation exists between the two variables, the samples are said to be dependent; the data of sample 1 could be paired with data from sample 2. In cases like these, we would be interested in the differences (d ) between the paired values. If the populations are normally distributed and a relationship exists, we would conduct a hypothesis test of two dependent means involving the Student t-distribution.

NO.
If no relation exists, then the variables are independent. Other questions must be asked to determine the testing procedures to be used on independent variables.

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Means Testing: The Procedures

Before proceeding to conduct a hypothesis test between two sample means, we must determine certain characteristics and parameters about the samples, some of which you will recognize from previous lessons.

Question no. 1: Are the samples related in some way?

NO.
If no relation exists, then the variables are independent. Other questions must be asked to determine the testing procedures to be used on independent variables.

Means Testing: The Procedures

Before proceeding to conduct a hypothesis test between two sample means, we must determine certain characteristics and parameters about the samples, some of which you will recognize from previous lessons.

Question no. 1: Are the samples related in some way?

NO. If no relation exists, then the variables are independent. Other questions must be asked to determine the testing procedures to be used on independent variables.

NO.
If no relation exists, then the variables are independent. Other questions must be asked to determine the testing procedures to be used on independent variables.