
Chapters 1 to 3
... 7. You can use parametric statistics only if at least one of your variables has been measured on: a) a nominal scale b) a discrete scale c) an ordinal scale * d) an interval scale 8. Even if your data consist of numbers, it is not valid to perform arithmetic operations on those numbers, if your data ...
... 7. You can use parametric statistics only if at least one of your variables has been measured on: a) a nominal scale b) a discrete scale c) an ordinal scale * d) an interval scale 8. Even if your data consist of numbers, it is not valid to perform arithmetic operations on those numbers, if your data ...
t-test
... What does the researcher do now? Does this data support/reject the alternative hypothesis? How can he/she be sure? ...
... What does the researcher do now? Does this data support/reject the alternative hypothesis? How can he/she be sure? ...
Answers:
... x w = $1.50 each found by (40*1.00) + (10*3.5) / 50 = 1.50 / each. Question 6: In 1976 the nationwide average price of a gallon of unleaded gasoline @ self serve pump was 0.605 $. By 2003, the average price had increased to 1.394$. What was the weighted mean annual increase for the period? ...
... x w = $1.50 each found by (40*1.00) + (10*3.5) / 50 = 1.50 / each. Question 6: In 1976 the nationwide average price of a gallon of unleaded gasoline @ self serve pump was 0.605 $. By 2003, the average price had increased to 1.394$. What was the weighted mean annual increase for the period? ...
Chapter 4
... Compute the mean, median, and standard deviation. Find the coefficient of skewness using Pearson’s estimate. What is your conclusion regarding the shape of the distribution? ...
... Compute the mean, median, and standard deviation. Find the coefficient of skewness using Pearson’s estimate. What is your conclusion regarding the shape of the distribution? ...