Answer:
The correct way to construct a scatter plot is:
When analyzing the number of boys who participate in volleyball each year for several years, the number of boys is the dependent variable.
Step-by-step explanation:
We know that a independent variable is the variable whose value is pre-assigned and the dependent variable is the variable that is obtained corresponding to the given variable or independent variable.
OR
We may say a dependent variable is the variable whose value is given corresponding to the assigned variable.
1)
When analyzing the number of junk e-mails received each day of the week, the number of junk e-mails is the independent variable.
The number of junk e-mails is the dependent variable and the days of the week are the independent variable.
Hence, option (1) is incorrect.
2)
When analyzing the number of cups of hot tea that are sold during days with varying average temperatures, temperature is the dependent variable.
The temperature is the independent variable and the number of cups of hot tea sold is the dependent variable.
Hence, option (2) is incorrect.
3)
When analyzing shoe size according to height, shoe size is the independent variable.
Height is the independent variable and shoe size is the dependent variable.
Hence, option (3) is incorrect.
4)
When analyzing the number of boys who participate in volleyball each year for several years, the number of boys is the dependent variable.
The year is the independent variable and the number of boys who participate that year is the dependent variable.
Hence, option (4) is correct.
