Question

In an experiment, the weight that mice gain is the dependent variable and the temperature of the environment is the independent variable. What must be held constant to obtain valid experimental results?

A.the weight of the mice

B. the color of the mouse cages

C. the length of time that the mice are observed

D.the temperature of the laboratory rooms

Answer 1

@DLS

Answer 2

I think it should be c. I m a bit confused about d as well.

Answer 3

I think it should be C, because in order to perform an equal experiment on each mouse, and get equal data and conclusion, you must have a constant. The constant being the length of time that the mice are observed.

Answer 4

The reason that it is C is because the length of time must be the same for each observation. :)

Answer 5

can you help me with an other question

Answer 6

Of course I can!! Maybe you could answer my question when you get the chance. But yes, I would be happy to help you with it!!

Answer 7

thanx
Where in a data table should units of measurement be shown?

next to the numbers

in the title of the table

in the headings of some columns

1next to the asterisk below the table

Answer 8

Either next to the number or next to the asterisk below the table. Every teacher is different and requires different things.

Answer 9

Omar studies the effects of a drought on the water level in a pond. He takes a reading of the water depth at the same location in the pond every day for the duration of the drought. Which method of displaying data would he most likely use to show changes in the water level?
a bar graph
a line graph
a data table
a pie graph

Answer 10

please help