Final Answer:
a. The scatter plot depicts the relationship between the age of a refrigerator and its electricity usage each day.
b. The scatter plot helps visualize the correlation between electricity usage and refrigerator age.
c. The scatter plot does not provide information about the impact of electricity usage on refrigerator age.
d. The scatter plot does not show the age distribution of different refrigerator models.
Step-by-step explanation:
a. The scatter plot illustrates the relationship between two variables: the age of a refrigerator and the amount of electricity it uses each day. Each data point on the plot represents a specific refrigerator, showing how its age correlates with daily electricity consumption. This visual representation allows for an examination of trends, such as whether older refrigerators tend to use more or less electricity.
b. Correlation refers to the statistical relationship between two variables. In this context, the scatter plot helps to visually assess the correlation between electricity usage and refrigerator age. If there is a pattern where as refrigerator age increases, electricity usage tends to either increase or decrease consistently, it indicates a correlation. The scatter plot serves as a preliminary tool for evaluating the strength and direction of this relationship.
c. While the scatter plot shows the relationship between refrigerator age and electricity usage, it does not provide information about the impact of electricity usage on refrigerator age. It's essential to note that correlation does not imply causation. The plot may reveal a correlation between the two variables, but it doesn't determine whether higher electricity usage causes an increase in refrigerator age or vice versa.
d. The scatter plot does not offer insights into the age distribution of different refrigerator models. It primarily focuses on the relationship between age and electricity usage, providing a snapshot of the data points for individual refrigerators. Age distribution across various refrigerator models would require additional information or a different type of analysis, such as a histogram or frequency distribution.