I the Computed Value of Chi-Square Is Always Positive Because

question 123

Multiple Choice

i. The computed value of chi-square is always positive because the difference between the observed frequencies and the expected frequencies are squared. ii. The shape of the chi-square distribution changes for each number of degrees of freedom.
iii. The minimum computed value of chi-square is zero.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Drug Abuse

The misuse of legal or illegal substances with the intention of creating pleasurable effects or escaping reality, potentially leading to dependence and harmful consequences.

Sedatives

Drugs that induce relaxation and sometimes intoxication by lowering the activity of the brain, the neurons, the muscles, the heart, and even by slowing the metabolic rate.

Barbiturates

Sedative and hypnotic drugs derived from barbituric acid that are used to treat anxiety, insomnia, and seizure disorders, but are associated with high risk of dependence.

Opiates

A class of drugs derived from opium that are used for pain relief, but can also be addictive.