Statistics

0 - none

A graph that leads you to think something else

There are 10 centimetres in one decimetre. Therefore, 100 centimetres is equal to 100/10 = 10 decimetres.

no edges but 3 faces.

A score is an old-fashioned word representing 20.

If each number is different from all of the other numbers and the combinations are considered distinct unless they contain the same numbers in the same order, the answer is 25 X 24 X 23 X 22 X 21 = 6,375,600. If the combinations are distinct only if they do not contain the same numbers, irrespective of order, then the answer is (25 X 24 X 23 X 22 X 21)(5 x 4 x 3 x 2) = 53,130.

One of the fundamental requirements of any scientific theory is that experiments are replicable. This requires reuslts to be comparable which would be impossible if members of the community did not use the same units.

They use display screens and optical systems that send 3D images to the eyes. Motion sensors in it measure the position and orientation of the head; this information is sent back to a computer which enables it to adjust the image sent back to a user.

Yes. They could increase the width and thereby reduce the frequency densities (heights) of the one or both of the outermost classes.

2

yes, they can

take for example this set:

3, 4, 4, 7

range is 4, 7-3

mode is 4, 4 appears twice and everything else appears once

median is 4, 4+4/2 = 4

Addition, subtraction, multiplication or division?

If addition, then 1/4 + 1/6 + 1/3 = 3/4

Presuming base 10 (aka, all numbers are between 0-9), 1+(10^3/10) so 101.

Edit: Changed the exponential analysis to emphasis the fact that 10 9's occur in 100 10's. Some result though.

You can write nine numbers: 125, 225, 325, 425, 525, 625, 725, 825, 925.

you add the numbers together than divide that by 2, after that you add how many numbers there are then subtract 2

1/3 or 4/12

A rational number is one that is the ratio of two integers, like 3/4 or 355/113. An irrational number can't be expressed as the ratio of any two integers, and examples are the square root of 2, and pi.

Between any two rational numbers there is an irrational number, and between any two irrational numbers there is a rational number.

Assuming you mean random variable here.

A random variable is term that can take have different values. for example a random variable x that represent the out come of rolling a dice, that is x can equal 1,2,3,4,5,or 6.

Think of probability distribution as the mapping of likelihood of the out comes from an experiment. In the dice case, the probability distribution will tell you that there 1/6 the time you will get 1, 2,3....,or 6. this is called uniform distribution since all the out comes have that same probability of occurring.

yes it should be

Within each stratum it is, but overall, it is not.

When it is random it is variable.

1/2 if it is a fair coin

8

They are the same.