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In a local store, find the price of a 60-W incandescent bulb and CFL and
LED bulbs with an equivalent light output. Based on a use of 4 hours per day and an electricity cost of $0.11/kWh, calculate the payback period for each of these bulbs compared to the incandescent.
Two Categories
Descriptive of data or entities that can be divided into two distinct groups.
Chi-squared Goodness-of-fit
A statistical test used to determine if observed data matches the expected distribution of a given hypothesis.
Chi-squared Tests
Statistical tests used to determine if there is a significant difference between observed frequencies and the frequencies expected under a specific hypothesis.
Nominal Data
Categorical data that cannot be logically ordered or ranked.
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