Eco 351 test 2

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Chpt 12 quiz

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Chap 13

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quiz 13

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In a goodness of fit test, Excel's CHISQ.TEST function returns a _____.

a. p-value

The number of times each experimental condition is observed in a factorial design is known as a(n) _____.

a. replication

In the analysis of variance procedure (ANOVA), factor refers to _____.

a. the independent variable

A goodness of fit test is always conducted as a(n

a. upper-tail test

In an analysis of variance where the total sample size for the experiment is nT and the number of populations is k, the mean square within treatments is _____.

c. SSE/(nT - k)

The degrees of freedom for a contingency table with 6 rows and 3 columns is _____.

d. 10

The F ratio in a completely randomized ANOVA is the ratio of _____.

d. MSTR/MSE

In an analysis of variance problem, if SST = 120 and SSTR = 80, then SSE is _____.

120-80=40

In an analysis of variance problem involving three treatments and 10 observations per treatment, SSE = 399.6. The MSE for this situation is _____.

399.6/((10x3)-3)= 14.8

An experimental design where the experimental units are randomly assigned to the treatments is known as

a. completely randomized design

A term that means the same as the term "variable" in an ANOVA procedure is _____.

a. factor

The mean square is the sum of squares divided by _____.

a. its corresponding degrees of freedom

When an analysis of variance is performed on samples drawn from k populations, the mean square between treatments (MSTR) is _____.

c. SSTR/(k - 1)

In factorial designs, the response produced when the treatments of one factor interact with the treatments of another in influencing the response variable is known as _____.

d. interaction

The number of degrees of freedom for the appropriate chi-square distribution in a test of independence is _____.

d. number of rows minus 1 times number of columns minus 1

The F ratio in a completely randomized ANOVA is the ratio of _____.

b. MSTR/MSE

The independent variable of interest in an ANOVA procedure is called _____.

b. a factor

The mean square is the sum of squares divided by _____.

b. its corresponding degrees of freedom

A population where each element of the population is assigned to one and only one of several classes or categories is a(n) _____.

b. multinomial population

The number of degrees of freedom for the appropriate chi-square distribution in a test of independence is _____.

b. number of rows minus 1 times number of columns minus 1

In order NOT to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be _____.

c. at least 5

The sampling distribution for a goodness of fit test is the _____.

c. chi-square distribution

In the ANOVA, treatment refers to _____.

c. different levels of a factor

To determine whether the means of two populations are equal, _____.

c. either a t test or an analysis of variance can be performed

A population where each element of the population is assigned to one and only one of several classes or categories is a(n) _____.

c. multinomial population

The process of allocating the total sum of squares and degrees of freedom is called _____.

c. partitioning

In the analysis of variance procedure (ANOVA), factor refers to _____.

c. the independent variable

The ANOVA procedure is a statistical approach for determining whether the means of _____.

c. two or more populations are equal

The sampling distribution for a goodness of fit test is the _____

d. chi-square distribution

A term that means the same as the term "variable" in an ANOVA procedure is _____.

d. factor

The required condition for using an ANOVA procedure on data from several populations is that the _____.

d. sampled populations have equal variances


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