Hellppp please it’s for a grade

The median is the number in the middle of the data. However If in the middle there are 2 numbers then add them and divide by 2.

The Median is 4

Step-by-step explanation:

To find the Median, you have to arrange the numbers in order from least to greatest.

So, that would be: 2, 2, 3, 3, 4, 4, 4, 9, 20, 20

The Median is the middle number, but since we have an even amount of numbers, there will be 2 Medians.

--> (2, 2, 3, 3, 4, 4, 4, 9, 20, 20 )

**Bold ones are our medians**

You can't have 2 medians, so what you would do is:

a) Add them up.

--> (4 + 4 = 8)

b) Then Divide by 2

--> (8 ÷ 2 = 4)

Therefore, 4 is your answer.

:)

stops on an even number.

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)