Question

Determine which of the following is an independent variable and which is a dependent variable.-A study is done on the effects of screen time before bed and sleep quality. Sleep quality is which variable?-You ask your friends how many siblings they have and what their allowance is to determine whether people with more siblings get for a higher allowance. The number of siblings is which variable? INDEPENDENT OR DEPENDENT -Your typing teacher bases her final grades on how fast her students can type. The final grades are which variable? INDEPENDENT OR DEPENDENT -Your mom asks her friends how much Vitamin D they give their kids each day and how many ear infections their kidshave had in the last year. The amount of Vitamin D the kids take is which variable? INDEPENDENT OR DEPENDENT -A botanist wants to know the exact level of sunlight that is necessary to grow the largest tomatoes. The size of the tomatoes is which variable? INDEPENDENT OR DEPENDENT

Answer 1

Answer and Explanations:

An Independent variable is a variable that can be controlled by the experimenter. The dependent variable depends on other variables (particularly on the independent variable)

Considering the given scenarios one after the other:

Sleep quality = Dependent variable

This is because it is an output variable depending on the screen time before bed

The number of siblings = Independent variable

It is an independent variable because it is an input variable on which the allowance of the people depends.

The final grade = Dependent variable

It is a dependent variable because it is an output variable that depends on the typing speeds of the students

The amount of vitamin D the kids take = independent variable

This is because it is an input variable on which the number of ear infections (output) depends

Size of tomatoes = Dependent variable

It is a dependent variable because it depends on the level of sunlight.