chi squared
This test is used for categorical data
What is a chi-squared test?
what is the formula to calculate a two-way table for homogeneity.
what is row total x column totals/grand total?
this test checks whether a sample distribution matches a claimed distribution.
what is a chi-squared goodness-of-fit test?
in Table C, the left column represents this.
what are degrees of freedom?
what is the goodness of fit interpretation for Ho and Ha?
what is Ho: the claim distribution of... is true?
what is Ha: at least one of the claimed distributions of... is not true?
what is the formula for chi squared?
what is (observed-expected)^2/expected?
how do you calculate the degrees of freedom for homogeneity.
what is row-1 x column-1?
A goodness-of-fit test with 4 categories has this many degrees of freedom.
what is 3?
df= 4-1
in Table C, the top column represents this.
What is the homogeneity interpretation for Ho and Ha?
what is Ho: there is no different between... ?
what is Ha: there is a different between... ?
A x^2 test with 3 degrees of freedom has significance level .10. Find the critical value.
what is 6.251?
true or false: the statistical formula for homogeneity the same as goodness of fit.
what is true?
In a goodness-of-fit test, this hypothesis assumes that the observed data follows the expected distribution.
what is the null hypothesis?
what is the confidence level if the p value=0.05
what is a 95% confidence level?
what do you name a test for goodness of fit?
what is "we will run a chi-square GOF test"?
what are the three conditions needed to preform a chi squared test?
what is independence, randomness, and normality?
what value must all expected values for the homogeneity table be greater than?
This is the sum of the difference between observed and expected frequencies (obs-exp).
what is 0?
Table C probabilities represent area to this side of the chi-squared statistic.
what is the right tail?
what do you name a homogeneity test?
what is we will run a chi-squared homogeneity test?
suppose a shop owner claims that an equal number of customers come into his shop each weekday.
Monday: 50 customers, Tuesday:60, Wednesday: 40, Thursday: 47, Friday: 53
What is the chi squared and p value?
what is x^2=4.36?
p value= 0.359?
true or false:
the GOF test used table C and the homogeneity test uses table A.
what is false?
if the calculated chi-squared statistic is smaller than the critical value, you make this decision.
what is "fail to reject the null hypothesis"?
calculate the p-value, using the critical value of 0.978, with 4 categorical variables.
what is p value=0.2?
what is the independence interpretation for Ho and Ha.
what is Ho: there is no association between... ?
Ha: there is no association between... ?