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
miskamm [114]
2 years ago
11

The dot plot shows the number of books lent by a school library during a 10-day period.

Mathematics
1 answer:
Katyanochek1 [597]2 years ago
6 0

The mean absolute deviation of the number of books is 1.84

<h3>How to determine the mean absolute deviation?</h3>

The dot plot of the number of books is in the attached figure.

From the figure, we have:

x      f

1       1

2      2

3      2

4      3

5      1

6     2

7     3

8     1

Start by calculating the mean using:

\bar x= \frac{\sum fx}{\sum f}

So, we have:

\bar x= \frac{1 * 1 + 2 * 2 + 2 * 3 + 3 * 4 + 1 * 5 + 2 * 6 + 3 *7 + 1 * 8}{1 +2+2+3+1+2+3+1}

Evaluate the sum and products

\bar x= \frac{69}{15}

Divide

\bar x= 4.6

The mean absolute deviation is then calculated as:

|\bar x| = \frac{\sum f|x - \bar x|}{\sum f}

So, we have:

|\bar x|= \frac{1 * |1 -4.6|+ 2 * |2 -4.6| + 2 * |3 -4.6|+ 3 * |4 -4.6|+ 1 *| 5 -4.6|+ 2 * |6 -4.6|+ 3 *|7 -4.6|+ 1 * |8-4.6|}{1 +2+2+3+1+2+3+1}

Evaluate the absolute difference

|\bar x|= \frac{1 * 3.6+ 2 * 2.6 + 2 * 1.6+ 3 * 0.6+ 1 *0.4+ 2 * 1.4+ 3 *2.4+ 1 * 3.4}{15}

Evaluate the sum of products

|\bar x|= \frac{27.6}{15}

Divide

|\bar x|= 1.84

Hence, the mean absolute deviation of the number of books is 1.84

Read more about mean absolute deviation at:

brainly.com/question/3250070

#SPJ1

You might be interested in
Miss lead says that if y varies directly with x and y=15 when x=-3, then y=-20 when x=4. Is she correct? Answer in complete sent
gizmo_the_mogwai [7]

Answer:

Yes,  she is correct.

Step-by-step explanation:

y = kx   is direct variation

15 = k*-3

k = -5.

So the equation of variation is

y = -5x

When x = -4:

y -5*-4 = 20.

6 0
2 years ago
Help me plz I’ll give brainliest
gladu [14]

Answer:

It is the top left one

Step-by-step explanation:

4 0
2 years ago
Janie receives an allowance of $3 per week. In addition, she can earn $2 for each chore she does. This week, she wants to earn e
Lilit [14]
Let us say that the number of weeks is "x" and the number of chores is "y".

If we state an algebraic expression for Janie's allowance it would be

3x+2y=13

However, there are two variables, hence many answers. To solve this problem, there must be more information about the relation between x and y.
6 0
3 years ago
Read 2 more answers
Which pair of ratios forms a proportion?​
bogdanovich [222]

Answer:

a

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Caren is making rice and beans. She can spend no more than $10 on the ingredients. Which situation is represented by the inequal
sergij07 [2.7K]
If you are given $10 every 3.5 hours and you want to find the unit rate per hour, you want to solve for how much money you make every hour. You do this by dividing the $10 by the 3.5 hours, which will result in about $2.86 per hour. (This is a rounded value)
5 0
3 years ago
Other questions:
  • Write 9 minutes less than Chang’s time in algebraic expression
    13·1 answer
  • (Press this if you don't see it) I need help on number six and seven.
    15·1 answer
  • The number 17 to the power of three over five can be written in the form a root of 17 to the power of b. What is the value of B?
    15·1 answer
  • What is greater 1/4 or 20%?
    9·2 answers
  • The equation of the parabola whose focus is at (0, 5) and directrix at y = -5 is:
    5·1 answer
  • What is the simple interest value missing in the table? Principal $2,500 Interest rate 3.5% Time 5 years Interest ? $43.75 $437.
    12·2 answers
  • B(10,15) B´(4,6) Which type of transformation is that?​
    11·1 answer
  • How do I write 55555 in expanded form
    10·2 answers
  • Hello, my friend had his account deleted recently and i need my bro back, he goes by co oper, if you dont know the guy then help
    6·2 answers
  • If f =28 when a = 7 find f when a is 10 (direct proportion) ​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!