Final answer:
Units for the characteristics of refrigerators include kilowatts for estimated energy consumption, inches for dimensions, and categorical designations for size class and Energy Star compliance. The Energy Efficiency Rating (EER) helps consumers compare efficiency in non-SI units.
Step-by-step explanation:
When comparing refrigerators, Consumer Reports provides information on various characteristics, each measured in specific units. Here are the units for each variable mentioned in the question:
- The brand name and model are descriptive variables and do not have physical units.
- The class of size (petite, grande, or extra grande) is a categorical variable with no associated physical units.
- The estimated energy consumption per year is expressed in kilowatts (kWh).
- Whether or not the fridge is Energy Star compliant is a binary variable, typically indicated by a label or a yes/no status.
- The measurements of the fridge (width, height, depth) are given in inches (in).
Understanding these units is crucial when evaluating the efficiency and suitability of a refrigerator for a consumer's needs. For instance, the difference in estimated energy consumption might influence the decision-making process. A refrigerator consuming 1.8 kWh per day, compared to one using 2.4 kWh/day, will result in energy savings. At an average electricity cost of $0.15 per kWh, these savings could be significant over time. The concept of the Energy Efficiency Rating (EER) is useful in this regard; it compares energy consumption in non-SI units, aiding consumers in identifying more efficient appliances.