METHODS OF DATA ANALYSIS
DECISION MAKING WITH HYPOTHESIS TESTING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There is no predicted direction for the alternative hypothesis
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There are two alternative hypotheses
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There are two types of error
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None of the above
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Detailed explanation-1: -A two-tailed hypothesis predicts that the independent variable will have an effect on the dependent variable without specifying a direction to determine if there is a statistically significant difference between two groups in either direction.
Detailed explanation-2: -A two-tailed test, in statistics, is a method in which the critical area of a distribution is two-sided and tests whether a sample is greater than or less than a certain range of values. It is used in null-hypothesis testing and testing for statistical significance.
Detailed explanation-3: -A non-directional hypothesis is a two-tailed hypothesis that does not predict the direction of the difference or relationship (e.g. girls and boys are different in terms of helpfulness).
Detailed explanation-4: -A two-sided hypothesis is an alternative hypothesis which is not bounded from above or from below, as opposed to a one-sided hypothesis which is always bounded from either above or below. In fact, a two-sided hypothesis is nothing more than the union of two one-sided hypotheses.