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Artemon [7]
3 years ago
13

Why is the standard deviation usually preferred over the​ range?

Mathematics
1 answer:
konstantin123 [22]3 years ago
4 0
Standard deviations, σ, is generally preferred over range. Reason being, it is calculated from all the data and when there is outliers it will not be impacted as much as the range. It is great to not also that, The IQR is preferred to the standard deviation when the distribution is very highly skewed or when there are severe outliers, because the IQR is less sensitive to this features than standard deviation.
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Help<br> me please asap
enot [183]

Answer:

first one:

Area of a circle = π*r²

diameter (they gave) = 30ft

radius = diameter/2 = 15ft

π*15²= 706.85834705770347865409476123789‬

to nearest tenth= 706.9 ft

second question:

circumference = 2*π*r or d(diameter)*π

diameter = 30ft

30*π = circumference = 94.247779607693797153879301498385‬

in terms of π = 30π

4 0
3 years ago
What is the probability of drawing a 9 of heart or an ace from a standard deck of cards? A. 7/52 B. 5/52 C. 5/26 D. 8/13 What is
Strike441 [17]
A for the first because  there are 4 aces and 1 nine of hearts. that makes it 5 cards of the 52 in a deck
d for the second because there are two cards: the queen of heart and and ace of diamond out of the 52

hope this helped :)

5 0
3 years ago
The lines below are perpendicular. If the green line has a slope of 3/4 what is the slope of the red line? Enter your answer as
krek1111 [17]

Answer:

-4/3

Step-by-step explanation:

m1m2=-1

so 3/4*X= -1

3X=-4

x= -4/3

5 0
3 years ago
Line p passes through A(-2, -4) and has a slope of 1/2 What is the standard form of the equation for line p?
yarga [219]
Point slope form is y-(-4) = 1/2(x-(-2)

y+4 =1/2 (x+2)

now the standard form 2y+8=x+2
so -x+2y=-6 is the equation for line p in standard form
4 0
3 years ago
Val tossed a coin 20 times. The results were 8 heads and 12 tails. What is the experimental probability of tossing heads?
Andrew [12]

Answer:

  2/5 or 0.40

Step-by-step explanation:

Val's result for heads is ...

  8/20 = 2/5 = 0.40

4 0
3 years ago
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