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aksik [14]
3 years ago
7

1, 3, 2, 2, 1, 3, 3, 1 What is the mean absolute deviation

Mathematics
1 answer:
MrRa [10]3 years ago
8 0

Answer:

6

Step-by-step explanation:

Given the data:

1, 3, 2, 2, 1, 3, 3, 1

The mean absolute deviation :

Sum of (1, 3, 2, 2, 1, 3, 3, 1) = 16

Mean = 16 / 8 = 2

Mean absolute deviation :

|1 - 2|+ |3 - 2| + |2 - 2| + |2 - 2| + |1 - 2| +|3 - 2| + |3 - 2| + |1 - 2|

= 1 + 1 + 0 + 0 + 1 + 1 + 1 + 1

= 6

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Dave walked to his friend's house at a rate of 4 mph and returned back biking at a rate of 10 mph. If it took him 18 minutes lon
katrin [286]

Answer:

4 miles

Step-by-step explanation:

<u>Walking:</u>

Distance  = d miles

Rate = 4 mph

Time = t hours

d=4\cdot t

<u>Biking:</u>

Distance = d miles

Rate = 10 mph

Time =t-\dfrac{18}{60}=t-0.3 hours (convert minutes to hours)

d=10\cdot (t-0.3)

Hence,

4t=10(t-0.3)\\ \\4t=10t-3\\ \\4t-10t=-3\\ \\-6t =-3\\ \\6t=3\\ \\t=\dfrac{3}{6}=\dfrac{1}{2}=0.5\ hour

Therefore, the distance to friend's house is

d=4\cdot 0.5=2\ miles

and the total distance of the round trip is

2+2=4\ miles

6 0
3 years ago
Which graph represents a line with a slope of and a y-intercept equal to that of the line y = x – 2?
IRINA_888 [86]
It will be graph one because your y intercept is where the liner equation meets the line which is -2 and the graph increases by 1 
6 0
3 years ago
Read 2 more answers
Why is the answer A ?<br>why can't D work?
attashe74 [19]
The negative in a = -2 for answer A represents a reflection over the x-axis.
What does the cosine graph usually look like?.....It goes through point (0,1) and decreases.
The graph shown goes through point (0,-2). Since there are no vertical or horizontal shifts, the graph has an amplitude of 2 and reflects over the x-axis.

a=2 for answer D does not represent the reflection over the x-axis.


7 0
3 years ago
Given two points (-3, 1) and (4, -1) are on a line. Write an equation in slope-
klio [65]

Answer:

y=-2/7x+1/7

Step-by-step explanation:

Find the slope first

-1-1/4+3

-2/7

m=-2/7

y=-2/7x+b

1=-2/7(-3)+b

b=1/7

4 0
3 years ago
A bag contains 6 red and 10 black marbles. If you pick up a marble, record it's color and return it to the bag 200 times how man
lara [203]

Answer:

10

Step-by-step explanation:

3 0
4 years ago
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