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Brilliant_brown [7]
2 years ago
10

Statistics please help I'm not good worth 50 points

Mathematics
1 answer:
mina [271]2 years ago
8 0

(a) I can't help you with using your calculator for this part, but if you have some familiarity with your device you can check your answer with mine.

The mean is simply the sum of all the house costs divided by the number of houses:

(75k + 75k + 150k + 155k + 165k + 203k + 750k + 755k)/8 = 291k

So the population mean is $291,000.

The population standard deviation is the square root of the population variance. To get the variance, you take the sum of all the squared differences between the cost and the mean cost, then divide that sum by the number of houses. That is,

[(75k - 291k)² + (75k - 291k)² + … + (755k - 291k)²]/8 = 581,286k

Note that the variances is measured in square dollars. Then the standard deviation is

√(581,286k) ≈ $762,421.1

(b) The median is just the price in the middle. There were 8 houses sold, so there are 2 "middle" prices. The median is the average of these:

(155k + 165k)/2 = 160k = $160,000

(c) Yes, the mode is the data that shows up most frequently. This happens at the lower end, with $75,000 appearing twice.

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Answer: 5 dollars

Step-by-step explanation:

7 0
3 years ago
Order each set of measures from greatest to least 1) 1.2 cm, 0.6 in, 0.031 m, 0.1 ft 2) 2 lb, 891 g, 1 kg, 0.02 T 3) 1 1/4 c, 0.
labwork [276]

Step-by-step explanation:

1) 1.2 cm, 0.6 in, 0.031 m, 0.1 ft

The relationship between the units is given as;

m > ft > in > cm

Upon converting the rest units to the lowest;

0.6 in = 1.524 cm

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The order is given as;

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2) 2 lb, 891 g, 1 kg, 0.02 T

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The order is given as;

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The order is given as;

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4) 4.5 ft, 48 in., 1.3 m, 120 cm

The relationship between the units is given as;

m > ft > in > cm

Upon converting the rest units to the lowest;

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3 0
2 years ago
Plz help ITS NOT A LOT !!!!!! Plz help
padilas [110]

Answer: Actually, you must use the Pythagorean Theorem!

a squared plus b squared equals c squared. So if you substitute in the values, a is 2 units and b is three units. 2 squared is 4 and 3 squared is 9.

4 + 9 = 13 so the answer is the square root of 13. (√13)

3 0
2 years ago
Which number is a perfect cube 5,100,125,150
kolbaska11 [484]
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 Because it's cube root is an integer:)
6 0
3 years ago
HELP will give branliest!
amm1812

Answer:

perimeter 140

Step-by-step explanation:

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60(2) + 10(2) = 140

:D

8 0
2 years ago
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