Multiple Choice
A small business tracks how advertising spending relates to weekly sales.
Plot Advertising Spending (x) vs Sales (y) & find the regression line & correlation coefficient.
Table of contents
- 1. Introduction to Statistics
- 2. Describing Data with Tables and Graphs
- 3. Describing Data Numerically
- 4. Probability
- 5. Binomial Distribution & Discrete Random Variables
- 6. Normal Distribution & Continuous Random Variables
- 7. Sampling Distributions & Confidence Intervals: Mean
- Sampling Distribution of the Sample Mean and Central Limit Theorem
- Distribution of Sample Mean - Excel
- Introduction to Confidence Intervals
- Confidence Intervals for Population Mean
- Determining the Minimum Sample Size Required
- Finding Probabilities and T Critical Values - Excel
- Confidence Intervals for Population Means - Excel
- 8. Sampling Distributions & Confidence Intervals: Proportion
- 9. Hypothesis Testing for One Sample
- Steps in Hypothesis Testing
- Performing Hypothesis Tests: Means
- Hypothesis Testing: Means - Excel
- Performing Hypothesis Tests: Proportions
- Hypothesis Testing: Proportions - Excel
- Performing Hypothesis Tests: Variance
- Critical Values and Rejection Regions
- Link Between Confidence Intervals and Hypothesis Testing
- Type I & Type II Errors
- 10. Hypothesis Testing for Two Samples
- Two Proportions
- Two Proportions Hypothesis Test - Excel
- Two Means - Unknown, Unequal Variance
- Two Means - Unknown Variances Hypothesis Test - Excel
- Two Means - Unknown, Equal Variance
- Two Means - Unknown, Equal Variances Hypothesis Test - Excel
- Two Means - Known Variance
- Two Means - Sigma Known Hypothesis Test - Excel
- Two Means - Matched Pairs (Dependent Samples)
- Matched Pairs Hypothesis Test - Excel
- 11. Correlation
- 12. Regression
- Linear Regression & Least Squares Method
- Residuals
- Coefficient of Determination
- Regression Line Equation and Coefficient of Determination - Excel
- Finding Residuals and Creating Residual Plots - Excel
- Inferences for Slope
- Enabling Data Analysis Toolpak
- Regression Readout of the Data Analysis Toolpak - Excel
- Prediction Intervals
- Prediction Intervals - Excel
- Multiple Regression - Excel
- Quadratic Regression
- Quadratic Regression - Excel
- 13. Chi-Square Tests & Goodness of Fit
- 14. ANOVA
12. Regression
Prediction Intervals - Excel
Back12. Regression
Prediction Intervals - Excel
- Multiple Choice
A small business tracks how advertising spending relates to weekly sales.
Predict what the business would make in weekly sales if they spent \$400 in advertising.
- Multiple Choice
A small business tracks how advertising spending relates to weekly sales.
Create a prediction interval for the value in part .
- Multiple Choice
A small business tracks how advertising spending relates to weekly sales.
Are the actual sales numbers for weeks with \$400 ad-spending within the interval?