Eco 351 test 2
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