Presentation on theme: "The Bunny Takes on Duracell Design of Experiments By Mike Newtown."— Presentation transcript:
The Bunny Takes on Duracell Design of Experiments By Mike Newtown
Before we start which battery is the best? Energizer Max Duracell Coppertop Energizer e 2 Duracell Ultra
HYPOTHESES Expensive batteries will last longer than the inexpensive ones Temperature being at high will produce the longest duration of useful voltage. Cleaning the contacts before use will prolong the duration of voltage.
Test Procedures The circuit board was placed into the freezer. A period of thirty minutes was allowed for the board to acclimate to room temperature or the freezer. The environmental change in temperature on the equipment was not considered in the original design.
Test Procedures The battery was placed in the circuit, stopwatch was started. When the light no longer exhibited an amber-orange glow time was recorded.
TermDOFSum SqrMean SqrF ValueProb>F% Contribution ModelA ModelB ErrorC ModelAB ErrorAC ErrorBC ErrorABC Residuals00 Choosing the Model
Response:Time to Discharge ANOVA for Selected Factorial Model Analysis of variance table [Partial sum of squares] Sum ofMeanF SourceSquaresDFSquareValueProb > F Model < significant A < B < AB Residual Cor Total The Model F-value of implies the model is significant. There is only a 0.01% chance that a "Model F-Value" this large could occur due to noise. ANOVA
Economics of Batteries Duracell Ultra and Energizer e2 are priced at $4.17. Duracell Coppertop is priced at $3.24 Energizer Max is $2.84. All Prices are for four packs from Walmart.
Additional Considerations A factor for voltage drop could be investigated. Use of automated recording devices would make this experiment easier. The influence of the chemical reaction on the battery. Most important, verify the results before making recommendations.