All categories

2 years ago

If the sum of squares for a sample containing 51 items equals 200, what is the standard deviation?

Mathematics

1 answer:

Mashcka [7]2 years ago

7 0

The standard deviation is 1.98. Option A is correct.

The standard deviation formula is given as

$\sigma = \sqrt{\frac{SS}{n} }$

where:

SS is the sum of squares = 200
n is the sample size = 51

Substitute the given parameters into the formula to have:

$\sigma = \sqrt{\frac{200}{51} }\\\sigma = \sqrt{3.922}\\\sigma = 1.980$

Hence the standard deviation is 1.98

Learn more on standard deviation here: brainly.com/question/12402189

You might be interested in

Minnie went to Orlando Bank to get a student loan. She borrowed $700 at a 12% interest rate compounded annually over 2 years. Ho

Sonbull [250]

Answer:

she have to pay rs.168 at the end of two years

8 0

2 years ago

What are Parallelogram markings?

Marat540 [252]

Answer:

A quadrilateral is a polygon with four sides. A parallelogram is a quadrilateral with both pairs of opposite sides parallel and congruent. ... The geometric markings shown on the rectangle below indicate parallel sides with an equal number of arrows and congruent sides indicated with an equal number of hatch (hash) marks.

Step-by-step explanation:

6 0

3 years ago

Which of the following can be a Pythagorean triplets?:

PolarNik [594]

<h2>Answer :-</h2>

As we know that,

Pythagoras triplet

1) a² + b² = c²

Let

$\sf \: {2}^{2} + {2}^{2} = {4}^{2}$

$\sf \: 4 + 4 = 16$

8 ≠ 16

<h3>Hence, A can't be Pythagoras triplet</h3>

2) a² + b² = c²

$\sf \:5 {}^{2} + {12}^{2} = {13}^{2}$

$\sf \: 25 + 144 = 169$

169 = 169

<h3>Therefore, B can be Pythagoras triplet</h3>

3)a² + b² = c²

$\sf {3}^{2} + {5}^{2} = {6}^{2}$

$\sf 9 + 25 = 36$

34 ≠ 36

<h3>Hence, C can't be Pythagoras triplet</h3>

4) a² + b² = c²

$\sf {5}^{2} + {4}^{2} = {7}^{2}$

$\sf \: 25 + 16 = 49$

41 ≠ 49

<h3>Hence, D can't be Pythagoras triplet</h3>

<h2 /><h2>Therefore :-</h2>

Only B can be Pythagoras triplet.

3 0

3 years ago

1. Find the simple interest.

Juliette [100K]

Answer:

The first one is 648 and the second one is 11,600

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

HOW DO YOU DO THIS??????????

Alexeev081 [22]

From 9:00 am to 9:00pm, that's a total of 12 hours,
so 12 of the 20 hours are charged at a rate of 0.25 dollar per hour, and the other 8 hours (20-12=8) are charged at a rate of $0.06 per hour.
the answer is b.
it should be 0.06 though, not 0.6

5 0

3 years ago