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sertanlavr [38]
3 years ago
6

What is the standard deviation of the following data set rounded to the nearest tenth 3,17,18,15,12,21,9

Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
6 0
Hey,
To find the Standard deviation of the data set, there are 4 steps:
<span>1. Work out the Mean (the simple average of the numbers)
2. Then for each number: subtract the Mean and square the result.
3. Then work out the mean of those squared differences.
4. T<span>ake the square root of that and we are done!

Here is your answer:
6.1

Is there a typo? I have checked my answer multiple times. Perhaps are you missing a number in the data set?

Cheers,
Izzy</span></span>
Alenkinab [10]3 years ago
4 0
I think that it is c or d but correct me if i am wrong
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Find the total surface area in square inches, of the following 3-
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Answer:

81 in²

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The 3-dimensional shape given is a square pyramid having a square base, and 4 right triangular side faces that are the same.

The surface area can be calculated by finding the area of the square base and the area of the 4 triangular side faces. Then sum all the areas together.

Or, we can use the following formula below: Base Area + ½(Perimeter of base) × Slant Length

Where,

Base area = s² = 5² = 25 in²

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6 0
3 years ago
If 40% is equal to the fraction X over 30 what is the value of X
Fofino [41]

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3 years ago
Which equation represents the formula for the general term, gn, of the geometric sequence 3, 1, 1/3, 1/9, . . .?
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3 0
3 years ago
What is the lcm of 16, 24 and 40
ivann1987 [24]
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Explanation: The Least Common Multiple (LCM) is the smallest number that two or more numbers will divide into evenly. NOTE: to find LCM you first need to know how to find GCD.

First we will find LCM for first two numbers ( 16 and24 ).

Step 1: Find the GCD (Greatest Common Divisor ) of 16 and 24 which is 8.

Step 2: Multiply the numbers 16 and 24 together ( 16 * 24 = 384 )

Step 3: Divide the 384 with 8. (384/8 = 48)

So, the LCM of 16 and 24 is 48.

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