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sertanlavr [38]
2 years ago
6

How to find mean, variance and standard deviation of each data set of 4,6,7,7,5,1,2,3

Mathematics
1 answer:
Sholpan [36]2 years ago
8 0

Answer:

search it up

Step-by-step explanation:

add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

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I’m so confused so can you help me
Lelu [443]
45²

This says "forty five squared"

Try saying it aloud, it may help to hear it :)

This basically just means to multiply 45 by itself twice.

So, what's 45 times 45? 

Its 2025!

Hope I helped! :)
6 0
3 years ago
Read 2 more answers
A teacher plans to buy air fresheners that cost $3.50 each. If the teacher can spend no more than $10 on the air fresheners and
iris [78.8K]

Answer:

Step-by-step explanation:

We need to create an equation to represent how many air fresheners the teacher can buy.

Teacher has $10 and a $3 discount coupon which would give her an extra $3 to spend. Each air freshener is $3.50.

x = number of air fresheners

($10 + $3) / $3.50 = x        can be written as $13/$3.50 = x

We add $10 and $3 because that gives us the total amount she has to spend.

We divide by $3.50 because that is the cost of each air freshener. The result is the number of air fresheners she can buy.

In this case.

$13/$3.50 = x

3.71 = x   BUT we can't buy part of an air freshener, so she can purchase 3 air fresheners.

8 0
3 years ago
Assume that I=E/(R+r) prove that 1/I=R/E+r/E ?​
Serggg [28]

Explanation:

If I=\frac E{R+r} then taking the reciprocal gives

\frac1I=\frac1{E/(R+r)}=\frac{R+r}E=\frac RE+\frac rE

5 0
2 years ago
Baylie measured her little sister's crayons and recorded the lengths in table below. List the lengths in order from greatest to
BigorU [14]
First of all, you need to get them all in the same format, easiest is decimal.

red = 1.25
yellow= 1.40
green = 1.20
blue = 1.50

so the order is blue, yellow, red, and lastly green
8 0
3 years ago
Read 2 more answers
Hannah and Anthony are siblings Who have ages that are consecutive odd numbers do some of their ages is 92 which equations could
baherus [9]
Let Hannah's age be represented by h; 

Since Anthony's age is a consecutive odd number age; his age is (h+2) 

92=(h)(h+2) 
92-2=2h
90=2h
90/2=h 
45=h 

If Hannah is 45 years old, Anthony is (45+2)= 47 years old

Hope I helped :) 
8 0
3 years ago
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