Question

Match problems to procedures.

Data were gathered in an experiment comparing the effects of three insecticides in controlling a certain species of parasitic beetle. Each observation represents the number of such insects found dead in a certain fixed area treated with an insecticide.

Does the data validate the normal probability distribution assumption?

Do contingency table classification values matter?

A multinomial probability distribution describes the distribution of counts across multiple levels of a variable. A special case is the binomial discrete probability distribution. For each level of a variable, which is common to multiple populations, equality of distributions can be tested.

Key:

1. ANOVA

2. Chi-squared test of homogeneity

3. Chi-squared test of independence

4. Chi-square test of goodness of fit

Answer 1

1) Data were gathered in an experiment comparing the effects of three insecticides in controlling a certain species of parasitic beetle. Each observation represents the number of such insects found dead in a certain fixed area treated with an insecticide. - 1) ANOVA

2) Does the data validate the normal probability distribution assumption? - 4) Chi-square test of goodness of fit

3) Do contingency table classification values matter? - 3) Chi-squared test of independence

4) A multinomial probability distribution describes the distribution of counts across multiple levels of a variable. A special case is the binomial discrete probability distribution. For each level of a variable, which is common to multiple populations, equality of distributions can be tested. - 2)  Chi-squared test of homogeneity