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lana66690 [7]
3 years ago
14

A group of 8 students was asked, "How many hours did you watch television last week?" Here are their responses: 7, 20, 8, 15, 10

, 17, 7, 13 Find the mean and median number of hours for these students. If necessary, round your answers to the nearest tenth.
Mathematics
2 answers:
cestrela7 [59]3 years ago
5 0
Well, lets find the Median first. Putting the numbers in order from least to greatest (7,7,8,10,13,15,20) then count from each side to find the middle number (15). To find the Mean you will add all of the numbers together and divide by how many numbers there are so 7+7+8+10+13+15+20=80. We then do 80/7=11.4, rounded will be 11.0.

Mean: 11
Median: 15

I hope this helped!
Musya8 [376]3 years ago
3 0
To find the mean you add up all the numbers and divide that amount by the amount of numbers. Which looks like this:
7 + 20 + 8 + 15 + 10 + 17 + 7 + 13= 97
97 divided by 8 = 12.125

The mean is 12.125.

To find the median you first need to put the numbers in order and then try to find the number in the middle. If there is two numbers in the middle those two numbers are still the median:
7, 7, 8, 10, 13, 15, 17, 20, 

The median(s) are 10 and 13. 
You might be interested in
How many times larger is 9 x 10^9 than 3 x 10^-4?
andrezito [222]
The larger value is 9 x 10^9
The smaller value is 3 x 10^(-4)

Divide the larger over the smaller
Doing so will have you divide the coefficients 9 and 3 (numbers in front of the "times ten to the..." portions) to get 9/3 = 3. 
Then you'll also subtract the exponents: 9 minus (-4) = 9 - (-4) = 9 + 4 = 13

In summary so far, we got a coefficient of 3 and an exponent of 13

So the final answer is 3 x 10^13 (assuming you want scientific notation)

If you want to convert to standard notation, instead of scientific notation, move the decimal point in 3.0 thirteen spots to the right to get 

30,000,000,000,000

there are 13 zeros (four groups of 3 plus one just after the 3) in that value above. This is the number 30 trillion
8 0
3 years ago
Factor over the complex numbers, if possible: x² + 2xyi - y2<br><br> What is the answer?
yanalaym [24]

9514 1404 393

Answer:

  (x +yi)²

Step-by-step explanation:

Comparing the given expression to the square of a binomial, we can determine the given expression to be a square.

  (a +b)² = a² +2ab +b²

Here, we have a=x and b=yi. Then the factorization is ...

  x² +2xyi +(yi)² = (x +yi)²

8 0
3 years ago
That’s my question ^^
Blababa [14]

Answer:

A. is the answer hop was this helps I did that problem

6 0
3 years ago
Read 2 more answers
Barry got a samll sandwich for lunch and ate 1/2 of his sandwich. Jonah got a large sandwich and ate 1/2 of his sandwich. Did Jo
xeze [42]
No, they did not eat the same amount. Barry ate less because his sandwich was smaller, so there would be a smaller half. Jonah ate more because his sandwich was bigger, so he would have eaten a bigger half.
8 0
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Rewrite logt (96) – logt (8) in compact form.<br> Hint: Use the quotient rule in reverse
S_A_V [24]

log( 96 ) - log( 8 ) =

log( 96 ÷ 8 ) =

log( 12 )

3 0
3 years ago
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