1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gala2k [10]
2 years ago
12

Find the mean for the data items

Mathematics
1 answer:
schepotkina [342]2 years ago
3 0

Answer:

4.5

Step-by-step explanation:

Given the data :

Score, x ____: 1, 2, 3, 4, 5, 6, 7, 8

Frequency, F : 1, 5, 1, 4, 4, 1, 5, 1

This is a grouped data: The mean of a grouped data is given as :

Mean (xbar) = ΣFx / ΣF

ΣFx = (1*1)+(2*5)+(3*1)+(4*4)+(5*4)+(6*1)+(7*5)+(8*1) = 99

ΣF = (1+5+1+4+4+1+5+1) = 22

Mean (xbar) = ΣFx / ΣF = 99 / 22 = 4.5

You might be interested in
-5 < x - 4 greater than it equal 1
saul85 [17]

We have expression -5 < x - 4 \geq 1 that renders the system of inequalities,

\begin{cases}-5 < x - 4 \\x - 4 \geq 1\end{cases}

Which can be simplified to,

\begin{cases}x > -1 \\x \geq 5\end{cases}

So what we get is something greater than -1 and at the same time greater or equal to 5, so the solution is,

x\in(\infty,-1)\cap(\infty, 5]=\boxed{(\infty,5]}.

Hope this helps.

6 0
3 years ago
A cone has a volume of 226.08 cubic millimeters and a height of 6 millimeters. What is its
dezoksy [38]

Answer:

r≈5.36656314

Step-by-step explanation:

Since A=πr(r+\sqrt{h^2+r^2}) so we get that 226.08/pi≈72 or 226.08/3.14=72 we then plug it in to get 72=r(r+\sqrt{36+r^2}) so we get r≈5.36656314

6 0
3 years ago
Read 2 more answers
Looking for right triangle side a is 1 inch long,and side b is 2 inches long. What is the length of side c?
Sergeeva-Olga [200]

Answer:

\sqrt{5}

Step-by-step explanation:

a^{2} + b^{2} = c^{2}

In this situation a = 1, b = 2

1^{2} + 2^{2}  = c^{2}

1 + 4 = c^{2}

5 = c^{2}

c = \sqrt{5}

This is an important mathematical theorem to know. It's called the Pythagorean Theorem.

3 0
2 years ago
If 1 US dollars can be exchanged for 0.55 Euros, how many Euros can be obtained when exchanging 47 U.S. dollars?
Zinaida [17]

Answer:

25.85 Euros

Step-by-step explanation:

1 US dollar = 0.55 Euros

0.55 x 47 = 25.85 Euros

Hope this helped :)

8 0
2 years ago
Read 2 more answers
What 2 numbers divide to get 375 while multiplying to equal 38.4?
Rus_ich [418]

Answer:

<em>Well, 375 is a composite number. </em>

<em>Prime factorization: 375 = 3 x 5 x 5 x 5, which can be written 375 = 3 x (5^3) </em>

<em>The exponents in the prime factorization are 1 and 3.</em>

<em>Factors of 375: 1, 3, 5, 15, 25, 75, 125, 375. </em>

<em>Factor pairs: 375 = 1 x 375, 3 x 125, 5 x 75, or 15 x 25. </em><em>Good Luck!</em>

5 0
3 years ago
Other questions:
  • PLEASE HELP !!!!
    12·1 answer
  • Please help me do number 16
    15·1 answer
  • $5.97 / 2 <br><br>please show your work! I'll give brainliest to whoever shows work.
    11·2 answers
  • 11/14 minus what is equal to 4/14
    8·2 answers
  • Determine the volume of the shaded region.
    6·1 answer
  • Which value of P and Q result in an equation with no solutions? 83x+P=83x+Q
    15·1 answer
  • Which of the below terms best describe the relationship between &lt;3 and &lt;4
    6·1 answer
  • 8. Rene can type a research paper in 8 hours. Mario helped Rene in typing, and together they
    14·1 answer
  • Plz HELP!!
    9·1 answer
  • Can soeone answer this asap pleasee?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!