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coldgirl [10]
4 years ago
8

Which measures describe the variation in a data set

Mathematics
1 answer:
Anestetic [448]4 years ago
8 0

Answer:

Variance, Range, Standard deviation, Inter-quartile range

Step-by-step explanation:

The most commonly used measure of variability in a data set include;

Variance and standard deviation - measures the variability of a data set about a fixed location, the mean. Variance is the square of the standard deviation.

Range - this is the difference between the largest and the smallest values in a data set.

Inter-quartile range is simply the difference between the third and the first quartile where the second quartile is the median.

Other measures include;

Downside semi-variance

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A survey of the men in a certain town showed that 35% of the men have blond hair and 14% of them have blond hair and blue eyes.
natita [175]
If you are given he has blond hair, so the total probability will be 35%. And among them, he needs to have blue eyes, its probability is 14% among the 35%. So the final probability is 14%/35%=40%.
7 0
4 years ago
Jayden bought 24 juice packs for $7.20 tia bought 6 juice packs for $2.70 which statement describes the difference in uint price
netineya [11]

Answer:

The difference in unit prices of Jayden and Tia’s pack is $0.15

Step-by-step explanation:

Here in this question, we are interested in writing a statement describing the unit prices of both purchases.

For Jayden, 24 pack cost $7.20, thus one pack will cost 7.20/24 = $0.30

For Tia, the united price will be 2.70/6 = $0.45

So the difference in the unit prices of both will be $0.45-$0.30 = $0.15

8 0
3 years ago
Tell whether the equation has one, zero, infinitely many solutions.<br> 3 ( y-2) = 3y - 6
mixas84 [53]
  • <em>Answer:</em>

<em>infinitely many solutions</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there !</em>

<em>3(y - 2) = 3y - 6</em>

<em>3y - 6 = 3y - 6 | + 6</em>

<em>3y = 3y </em>

<em>true ∀ y ∈ R</em>

<em>Good luck  !</em>

4 0
4 years ago
Read 2 more answers
Over the last three evenings, Melissa received a total of 126 phone calls at the call center. The first evening, she received 6
krok68 [10]

Answer:

calls first evening = 26

calls second evening  = 80

calls third evening = 20

Step-by-step explanation:

Let x = calls third evening

x+6 = calls first evening

4x = calls second evening

x+6 + 4x + x = total calls = 126

Combine like terms

6x+6 = 126

Subtract 6 from each side

6x =120

Divide by 6

6x/6 =120/6

x = 20

x+6 = calls first evening = 20+6 = 26

4x = calls second evening = 4*20 = 80

Let x = calls third evening = 20

6 0
4 years ago
On a standardized test, Rall answered the first 22 questions in 5 minutes. There are 77 questions on the test. If he continues t
Rasek [7]
Data:
Questions = 77
Anwered = 22
<span>Missing = 77 - 22 = 55
</span>
Solving:

Questions ________ Time
22 -------------------------- 5
55 -------------------------- t

<span>Multiply cross:
</span>
22*t = 55*5
22t = 275
t =  \frac{275}{22}
\boxed{t = 12,5minutes}
3 0
3 years ago
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