QMB3250 EXAM 1 QUESTIONS AND
ANSWERS
Graphs for 1 Categorical Variable -
correct answer ✅Pie Charts and Bar Charts
2 Categorical Variables -
correct answer ✅Contingency Table
Graph for 1 Quantitative Variable -
correct answer ✅Histograms, Dot Plots, Stem and Leaf Plots, Box
Plot
Graphs for 2 Quantitative Variables -
correct answer ✅Scatterplot
Graphs for 1 Quantitative Variable with Multiple Categories -
correct answer ✅Boxplots
Residual -
correct answer ✅residual = observed value - predicted value
Correlation Coefficient -
correct answer ✅a statistical index of the relationship between
, QMB3250 EXAM 1 QUESTIONS AND
ANSWERS
two things (from -1 to +1); can be found by taking the square root
of r-squared and then determine sign from graph
JMP Standard Deviation -
correct answer ✅File -- New -- Data Table -- Insert Data -- Analyze
-- Distribution -- Drag Column Required -- Stack (Small tab next to
Distribution)
Find Test Statistic for Significance Test -
correct answer ✅Enter two columns of data -- Analyze --
Specialized Modeling -- Matched Pairs -- Drag each column into Y,
Paired Response -- OK -- t-Ratio **
What value of t would you use for 95% confidence interval for μd? -
correct answer ✅Help -- Sample Data -- Teaching Scripts --
Interactive Teaching Modules -- Distribution Calculator -- Central
Probability -- Probability: 0.95
Skewed Right -
correct answer ✅mean > median
ANSWERS
Graphs for 1 Categorical Variable -
correct answer ✅Pie Charts and Bar Charts
2 Categorical Variables -
correct answer ✅Contingency Table
Graph for 1 Quantitative Variable -
correct answer ✅Histograms, Dot Plots, Stem and Leaf Plots, Box
Plot
Graphs for 2 Quantitative Variables -
correct answer ✅Scatterplot
Graphs for 1 Quantitative Variable with Multiple Categories -
correct answer ✅Boxplots
Residual -
correct answer ✅residual = observed value - predicted value
Correlation Coefficient -
correct answer ✅a statistical index of the relationship between
, QMB3250 EXAM 1 QUESTIONS AND
ANSWERS
two things (from -1 to +1); can be found by taking the square root
of r-squared and then determine sign from graph
JMP Standard Deviation -
correct answer ✅File -- New -- Data Table -- Insert Data -- Analyze
-- Distribution -- Drag Column Required -- Stack (Small tab next to
Distribution)
Find Test Statistic for Significance Test -
correct answer ✅Enter two columns of data -- Analyze --
Specialized Modeling -- Matched Pairs -- Drag each column into Y,
Paired Response -- OK -- t-Ratio **
What value of t would you use for 95% confidence interval for μd? -
correct answer ✅Help -- Sample Data -- Teaching Scripts --
Interactive Teaching Modules -- Distribution Calculator -- Central
Probability -- Probability: 0.95
Skewed Right -
correct answer ✅mean > median
