Stemscopes Exam Mathematics in Science 1

Question 1

In a bar graph, what does the height of each bar represent?

Accepted Answer

The frequency or value of the data

Answer

In a bar graph, the height (or length) of each bar corresponds to the value or frequency of that category.

Question 2

What is the mean of the data set: 4, 8, 6, 10, 2?

Accepted Answer

6

Answer

The mean is calculated by adding all values (4+8+6+10+2=30) and dividing by the count (30÷5=6).

Question 3

Which metric unit is used to measure volume in science?

Accepted Answer

Liter

Answer

The liter (L) and milliliter (mL) are the standard metric units used to measure liquid volume in science.

Question 4

On a line graph, what does a positive slope indicate?

Accepted Answer

As x increases, y also increases

Answer

A positive slope on a line graph means that as the x-variable increases, the y-variable also increases.

Question 5

What is a control variable in an experiment?

Accepted Answer

A variable kept constant throughout

Answer

Control variables are factors that are kept constant during an experiment so they do not affect the results.

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