Causal Hypothesis
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Causal Hypotheses
Causal Hypotheses ●
● ●
Statement of relationship between an independent and dependent variable Describes a cause and effect Usually stated in two forms ● ●
●
The null hypothesis The alternative hypothesis
The two forms are ● ●
Mutually exclusive Exhaustive
Causal Hypothesis (One-Tail) Causal hypothesis
Employee training program will reduce employee absenteeism.
Null: There will be no change or there will be more absenteeism as a result of training. Alternative: There will be less absenteeism as a result of training.
Causal Hypothesis (One-Tail) Causal hypothesis
Employee training program will reduce employee absenteeism.
Null: There will be no change or there will be more absenteeism as a result of training. Alternative: There will be less absenteeism as a result of training. No change
Less -
More 0
Absenteeism
+
Causal Hypothesis (One-Tail) Causal hypothesis
Employee training program will reduce employee absenteeism.
Null: There will be no change or there will be more absenteeism as a result of training . Alternative: There will be less absenteeism as a result of training. No change
A “one-tail” hypothesis Less -
More 0
Absenteeism
+
Causal Hypothesis (Two-Tail) Causal hypothesis
Our new drug treatment will cause a difference in depression.
Null: There will be no change in depression as a result of treatment. Alternative: There will be a change in depression as a result of treatment.
Causal Hypothesis (Two-Tail) Causal hypothesis
Our new drug treatment will cause a difference in depression.
Null: There will be no change in depression as a result of treatment. Alternative: There will be a change in depression as a result of treatment. No change
Less -
More 0
Depression
+
Causal Hypothesis (Two-Tail) Causal hypothesis
Our new drug treatment will cause a difference in depression.
Null: There will be no change in depression as a result of treatment . Alternative: There will be a change in depression as a result of treatment. No change
A “two-tail” hypothesis Less -
More 0
Depression
+
Causal Hypotheses ●
● ●
Statement of relationship between an independent and dependent variable Describes a cause and effect Usually stated in two forms ● ●
●
The null hypothesis The alternative hypothesis
The two forms are ● ●
Mutually exclusive Exhaustive
Causal Hypothesis (One-Tail) Causal hypothesis
Employee training program will reduce employee absenteeism.
Null: There will be no change or there will be more absenteeism as a result of training. Alternative: There will be less absenteeism as a result of training.
Causal Hypothesis (One-Tail) Causal hypothesis
Employee training program will reduce employee absenteeism.
Null: There will be no change or there will be more absenteeism as a result of training. Alternative: There will be less absenteeism as a result of training. No change
Less -
More 0
Absenteeism
+
Causal Hypothesis (One-Tail) Causal hypothesis
Employee training program will reduce employee absenteeism.
Null: There will be no change or there will be more absenteeism as a result of training . Alternative: There will be less absenteeism as a result of training. No change
A “one-tail” hypothesis Less -
More 0
Absenteeism
+
Causal Hypothesis (Two-Tail) Causal hypothesis
Our new drug treatment will cause a difference in depression.
Null: There will be no change in depression as a result of treatment. Alternative: There will be a change in depression as a result of treatment.
Causal Hypothesis (Two-Tail) Causal hypothesis
Our new drug treatment will cause a difference in depression.
Null: There will be no change in depression as a result of treatment. Alternative: There will be a change in depression as a result of treatment. No change
Less -
More 0
Depression
+
Causal Hypothesis (Two-Tail) Causal hypothesis
Our new drug treatment will cause a difference in depression.
Null: There will be no change in depression as a result of treatment . Alternative: There will be a change in depression as a result of treatment. No change
A “two-tail” hypothesis Less -
More 0
Depression
+
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