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Pie
3 years ago
12

What is the upper and lower quartile of this set of data? 15, 19, 20, 25, 31, 38, 41

Mathematics
2 answers:
morpeh [17]3 years ago
4 0

Answer:

Lower Quartile (Q1) = 19; Upper Quartile (Q3) = 38.

Step-by-step explanation:

To find the quartiles, we begin by finding the median (Q2).  The median is the middle value; this is 25.

The median splits the data into half.  The median of the lower half is 19; this is the lower quartile.  The median of the upper half is 38; this is the upper quartile.

aev [14]3 years ago
3 0
Answer:

Upper quartile: 38
Lower quartile: 19
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Four out of 18 male student and
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Male 2:9

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Step-by-step explanation:

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3 years ago
How much is -1 over 4 of 1 1 over 3
nadezda [96]

the anser to that problem is -1/3

5 0
3 years ago
Find the common ratio for the following sequence .1, .01, .001
morpeh [17]

Answer:

0.1

Step-by-step explanation:

The <em>common ratio</em> of a sequence is the number you multiply one term to get the next one. Here, we multiply 0.1 by 0.1 to get 0.01, and 0.01 by 0.1 to get 0.001, so our common ratio is 0.1.

5 0
3 years ago
In a hypothesis test, standard error measures ____.
Lina20 [59]

Answer:

The correct answer is:

the amount of difference expected just by chance (b)

Step-by-step explanation:

Standard error in hypothesis testing is a measure of how accurately a sample distribution represents a distribution by using standard deviation. For example in a population, the sample mean deviates from the actual mean, the mean deviation is the standard error of the mean, showing the amount of difference between the sample mean and the actual mean, occurring just by chance. Mathematically standard error is represented as:

standard error = (mean deviation) ÷ √(sample size).

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7 0
3 years ago
Equation of perpendicular line:<br><br> Equation of parallel line:
tamaranim1 [39]

1)Parallel means they have to have the same slope. Since our equation is y=2/3x+1, a line parallel to that would be(using out points) -5=2/3(-4)+b.

To find the y-intercept, solve for "b".

b=-7/3

Our equation would then be y=2/3x-7/3

2)Perpendicular lines have opposite-reciprocal slopes. our previous equation was y=2/3x+1, so our new equation would be -5=-3/2(-4)+b. Now lets solve for b.

b=-11

So our perpendicular equation would be y=-3/2x-11

Hope that was helpful. :)

8 0
4 years ago
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