False.
To determine the standard deviation (and the same is true for the mean) you need to know how many times each number was repeated.
The length and width of the rectangle is 2√5m and √5m respectively
<h3>Volume of a rectangle</h3>
The formula for calculating the volume of a rectangle is expressed as:
V = lw
where
l is the length
w is the width
h is the height
If base is twice its width, then l = 2w
Substitute
10 = w(2w)
10 = 2w²
5 = w²
w = √5 m
Since l = 2w
l = 2√5m
Hence the length and width of the rectangle is 2√5m and √5m respectively
Learn more on volume of rectangle here: brainly.com/question/4062480
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Given:
The table of data values.
To find:
What is the percentage of 10th grade students are in 2 clubs.
Solution:
From the given table it is clear that the number of 10th grade students are in 2 clubs is 12.
Total number of students in 10th grade is:

Now, the percentage of 10th grade students are in 2 clubs is:




Therefore, the percentage of 10th grade students are in 2 clubs is 7.89%.