COHP 350 QUIZ 6 QUESTIONS
WITH ACCURATE ANSWERS
a contingency table is necessary for the following type of chi-square test: a)
goodness-of-fit b) independence c) homogeneity d) t-test correct answer
independence
a high-calculated value of F leaves you wondering which pair of samples are
statistically different from each other with a... correct answer TK test
ANOVA calculations necessarily depend on the following variables except: correct
answer EBP
ANOVA is preferred over multiple t-testing because... correct answer there is a
lower possibility of a Type 1 error being committed
Basic characteristics of test of a single variance correct answer - assumes that
underlying distribution is normal
- null and alternative hypotheses are stated in terms of population
variance/population standard deviation
- s2 = sample variance
o2 = population variance
s - random variable
- df = n -1
- may be right-tailed, left-tailed, or two-tailed
, Basic characteristics of test of homogeneity correct answer - tests to see if two
populations follow the same unknown distribution
- same procedure as with test of independence
- if two populations are significantly different than one another, we have to use a
different test statistic to find assoication
- expected value for each cell needs to be at least 5
- df = # of columns - 1
basic characteristics of test of independence correct answer - determines if
events are independent
- contingency tables
- i: # of rows
- j: # of columns
- expected value for each cell needs to be at least 5.
Basic characteristics of the goodness of fit test correct answer - almost always
right-tailed
- expected value must be at least 5
- observed and expected values
- determines if data fit a particular distribution
chi-square tests typically involve differences between: a) observed (or actual) and
expected values b)population standard deviation c) sample variances and
population variances d) observed (or actual) distributions and expected
distributions e) a and d f) b and c? correct answer e), a and d
WITH ACCURATE ANSWERS
a contingency table is necessary for the following type of chi-square test: a)
goodness-of-fit b) independence c) homogeneity d) t-test correct answer
independence
a high-calculated value of F leaves you wondering which pair of samples are
statistically different from each other with a... correct answer TK test
ANOVA calculations necessarily depend on the following variables except: correct
answer EBP
ANOVA is preferred over multiple t-testing because... correct answer there is a
lower possibility of a Type 1 error being committed
Basic characteristics of test of a single variance correct answer - assumes that
underlying distribution is normal
- null and alternative hypotheses are stated in terms of population
variance/population standard deviation
- s2 = sample variance
o2 = population variance
s - random variable
- df = n -1
- may be right-tailed, left-tailed, or two-tailed
, Basic characteristics of test of homogeneity correct answer - tests to see if two
populations follow the same unknown distribution
- same procedure as with test of independence
- if two populations are significantly different than one another, we have to use a
different test statistic to find assoication
- expected value for each cell needs to be at least 5
- df = # of columns - 1
basic characteristics of test of independence correct answer - determines if
events are independent
- contingency tables
- i: # of rows
- j: # of columns
- expected value for each cell needs to be at least 5.
Basic characteristics of the goodness of fit test correct answer - almost always
right-tailed
- expected value must be at least 5
- observed and expected values
- determines if data fit a particular distribution
chi-square tests typically involve differences between: a) observed (or actual) and
expected values b)population standard deviation c) sample variances and
population variances d) observed (or actual) distributions and expected
distributions e) a and d f) b and c? correct answer e), a and d
