I in the Goodness-Of-Fit Test, the Chi-Square Distribution Is Used

question 57

Multiple Choice

i. In the goodness-of-fit test, the chi-square distribution is used to determine how well an observed set of observations "fits" an "expected" set of observations. ii. The sum of the expected frequencies and the sum of the observed frequencies must be equal.
iii. If the computed value of chi-square is less than the critical value, reject the null hypothesis at a predetermined level of significance.

• 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:

Disease vectors

Living organisms such as mosquitoes or ticks that can transmit infectious pathogens between humans, or from animals to humans.

Immunization practices

Methods and schedules for administering vaccines to protect individuals and communities from infectious diseases.

Determinants of health

Factors that influence an individual's health status, including biological, socioeconomic, environmental, and behavioral components.

Circumstances

The conditions or facts affecting a particular event, situation, or decision, often beyond an individual's control.