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
Complete the ordered pairs so that they are solutions of the linear equation 5x + y = -21: (-6, ___), (0, ___), (1, ___).
Iteru [2.4K]
<span>5x + y = -21:
(-6, 9), (0, -21), (1, -26).</span>
5 0
3 years ago
Read 2 more answers
Add 1/4 and 5/8 by using the giant one to create a common denominator <br> thanks
Sedbober [7]

Answer:

7/8

Step-by-step explanation:

1/4×2=2/8....2/8+5/8=7/8

3 0
3 years ago
The two cones below have the same radius, height, and
lozanna [386]

Answer:

yes

Step-by-step explanation:

The cones are not concurrent because one cone is obliquewhich makes the length of these land height is different have the same radius same volumes and same height are the cones concurrent is the corresponding slant height sorry equal .concurrent counts must have concurrent corresponding slant height with all this corresponding being concurrent

3 0
2 years ago
- 2y + 3 = - 4y<br> The solution set is what???
lianna [129]

Answer:

Y=-3/2

Step-by-step explanation:

-2y+3=-4y

Move constant to the right  by adding its opposite to both sides

-2y+3-3=-4y-3

Eliminate the opposites

-2y=-4y-3

collect the like terms

-2y+4y

collect the like terms

(-2+4)y

Calculate the sum

2y=-3

divide both sides of the equation by 2

2y÷2=-3÷2

Any expression divided by itself equal 1

y=-3÷2

y=-3/2

8 0
3 years ago
Read 2 more answers
PLS HELP:( !! What is an equation of the line
pychu [463]

Answer:

y =  \frac{3}{2} x + 8

Step-by-step explanation:

The given equation is written in the form of y=mx+c (where m is the gradient and c is the y-intercept).

Thus, gradient of given equation= -⅔

The products of the gradient of perpendicular lines is -1.

(Gradient of line)(-⅔)= -1

Gradient of line

=  - 1  \div ( -  \frac{2}{3} ) \\  =  \frac{3}{2}

Hence, m= \frac{3}{2}.

Subst. m= \frac{3}{2}into the equation:

y =  \frac{3}{2} x + c

To find the value of c, substitute a pair of coordinates into the equation:

When x= -4, y= 2,

2 =  \frac{3}{2} ( - 4) + c \\ 2 =  - 6 + c \\ c = 2 + 6 \\ c = 8

Thus, the equation of the line is y =  \frac{3}{2} x + 8.

3 0
3 years ago
Read 2 more answers
Other questions:
  • I need help finding x<br> ANSWER ASAP!!!!!!!!!
    9·1 answer
  • What is the answer for this question please
    13·2 answers
  • PLEASE ANSWER ASAP. THANK YOU!!
    14·2 answers
  • 1. Bacteria can multiply at an alarming rate when each bacteria splits into two new cells, thus doubling of
    7·1 answer
  • 8.) a. use the net for the rectangular prism to find its surface area
    6·2 answers
  • total cons of the 6 books and 7 pens is rupees 79 and the total cost of 7 book and six pen is rupees 77 find the cost of one boo
    14·1 answer
  • Cuanto es en total de 6000x1
    13·1 answer
  • THREE QUESTIONSS PLEASE HELP !!!
    10·2 answers
  • Pls help me
    10·2 answers
  • Figure ABCD is transformed to A′B′C′D′, as shown:
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!