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ryzh [129]
3 years ago
6

I need help . Plz help me

Mathematics
1 answer:
Gekata [30.6K]3 years ago
5 0
The mean is the same thing as the average. To find the average, add all the numbers up (aka find the sum of the numbers) and divide by how many numbers there is:
average =  \frac{sum \: of  \: numbers}{\# \:  of  \: numbers}

So the sum of your numbers is: -6 + 2 + 5 + -7 + -11 + -6 = -23. And there are 6 numbers total.
That means average =  \frac{-23}{6} = -3.833333 ≈ -3.8

Your final answer is -3.8
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A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the
Len [333]

Answer:

First quartile = 3.5

Third quartile = 6.5

Step-by-step explanation:

Sales for last 20 hours :

3, 4, 5, 5, 6, 7

Using the data given :

The first quartile, Q1 ;

Q1 = 1/4(n+1)th term

n = 6

Q1 = 1/4(6 + 1)th term

Q1 = 7/4 = 1.75 th term

(3 + 4) / 2 = 7/2 = 3.5

The third quartile, Q3:

Q3 = 3/4(n+1)th term

n = 6

Q3 = 3/4(6 + 1)th term

Q3 = 21/4 = 5.25th term

(5th + 6th) term / 2

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6 0
3 years ago
The orange shape is a dilation of the black shape
grigory [225]

Answer:

 1/4

Step-by-step explanation:

The orange shape is 3 units tall and 4 units wide. The black shape is 12 units tall and 16 units wide. The scale factor is ...

 orange/black = 3/12 = 4/16 = 1/4

<h2 />
7 0
2 years ago
In a survey, of the voters support a particular referendum. If 40 voters are chosen at random, find the mean and variance for th
Katyanochek1 [597]

This question is incomplete, the complete question is;

In a survey, 55% of the voters support a particular referendum. If 40 voters are chosen at random,

find the mean and variance for the number of voters who support the referendum.

Answer:

a) The Mean is 22

b) Variance is 9.9

Step-by-step explanation:

Given that;

55% of the voters support a particular referendum p = 0.55

q = 1 - p = 1 - 0.55 = 0.45

sample size n = 40

a)

Mean = sample size n × p

Mean = 40 × 0.55

Mean = 22

Therefore the Mean is 22

b)

Variance = n × p × q

so we substitute

Variance = 40 × 0.55 × 0.45

Variance = 9.9

Therefore the Variance is 9.9

3 0
3 years ago
Please answer or comment if your good at math and willing to help please
olganol [36]

Answer: Indeed i am

Hope This helps :)

7 0
2 years ago
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The show has never confirmed how the trap door works but it is most likely filled with foam cube.
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3 years ago
Read 2 more answers
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