STATS 145 FINAL EXAM
QUESTIONS WITH ACCURATE
ANSWERS
Assumption regarding the error term e in the regression model correct answer
For each value of x:
the values are independent
the values are normally distributed
the values have equal variance
the values have a mean of 0
Cases correct answer the people, objects, or units being studied.
AKA subjects, participants, or experimental units.
listed by a row
Central limit theorem correct answer proportions= at least 10 successes and
failures
samples= at least 30
Chi-Square distribution requirements correct answer skewed to the right
non-negative values
E values
Coefficient of determination correct answer the proportion of variation in y that
is explained by the linear relationship with x
QUESTIONS WITH ACCURATE
ANSWERS
Assumption regarding the error term e in the regression model correct answer
For each value of x:
the values are independent
the values are normally distributed
the values have equal variance
the values have a mean of 0
Cases correct answer the people, objects, or units being studied.
AKA subjects, participants, or experimental units.
listed by a row
Central limit theorem correct answer proportions= at least 10 successes and
failures
samples= at least 30
Chi-Square distribution requirements correct answer skewed to the right
non-negative values
E values
Coefficient of determination correct answer the proportion of variation in y that
is explained by the linear relationship with x
