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BartSMP [9]
2 years ago
5

If my dot plot is not skewed or symmetrical which measure of variability should I use? (15 data points) please help asap! :)

Mathematics
1 answer:
Alina [70]2 years ago
5 0

Answer:

1 Choosing Appropriate Measures

The dot plot shows the average number of hours students in a class

sleep each night.

6 7 8 9 10

Time (hours)

Amount of Sleep

a. What are the most appropriate measures to describe the center

and the variation?

Most of the data values are on the right clustered around 9, and the

tail extends to the left. The distribution is skewed left.

So, the median and the interquartile range are the most

appropriate measures to describe the center and the variation.

b. Describe the center and the variation of the data set.

The median is 8.5 hours. The fi rst quartile is 7.5, and the third

quartile is 9. So, the interquartile range is 9 − 7.5 = 1.5 hours.

The data are centered around 8.5 hours. The middle half of the

data varies by no more than 1.5 hours.

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What is the range of a cosine function?
salantis [7]

Answer:

The sine and cosine functions have a period of 2π radians and the tangent function has a period of π radians. Domain and range: From the graphs above we see that for both the sine and cosine functions the domain is all real numbers and the range is all reals from −1 to +1 inclusive.

Step-by-step explanation:

6 0
3 years ago
A metal worker has several 1-kilogram bars of a metal alloy that contain 23% copper and several 1-kilogram bars that contain 79%
astraxan [27]

Answer:

30 each of 23% bars and 18 each of 79% bars

Step-by-step explanation:

If x is the number of 1 kg 23% copper bars, and y is the number of 1 kg 79% copper bars, then:

x + y = 48

0.23x + 0.79y = 0.44(48)

Substituting and solving:

0.23x + 0.79(48-x) = 0.44(48)

0.23x + 37.92 - 0.79x = 21.12

16.8 = 0.56x

x = 30

y = 48 - x

y = 18

You need 30 each of 23% bars and 18 each of 79% bars.

4 0
3 years ago
Answer me before tomorrow
Margarita [4]

The ex- suffix often correlates a word to mean "outside", while the in- suffix often correlates a word to mean "inside". An exterior angle of a polygon would mean "an angle outside of a polygon". An interior angle of a polygon would mean "an angle inside of a polygon". Three exterior angles of this polygon would be angle B, angle D, and angle A. This is because these angles are outside of the polygon due to the extending lines from the shape. Two interior angles of this polygon would be angle 6 and angle 8 (explanation was given when I first began answering this question). Angle 9 would be exterior since it is outside of the polygon. Two exterior angles of the polygon that are congruent are angle D and angle 9, since they are both 90 degrees (right angles).

8 0
3 years ago
A bag of marbles contains 4 red
marissa [1.9K]
The answer is 7/8!!!!!!
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3 years ago
Mick paid $2.94 in sales tax of an item that cost $42.00 before tax. At that rate, how much would he pay in sales tax for an ite
BabaBlast [244]
$4.06
2.94/42=7/100
4.06/58=7/100
7 0
3 years ago
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