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2 years ago

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Measures of variability,i have learned that

1 answer:

Svetllana [295]2 years ago

3 0

Answer:

Measures of Variability: Range, Interquartile Range, Variance, and Standard Deviation. ... While a measure of central tendency describes the typical value, measures of variability define how far away the data points tend to fall from the center. We talk about variability in the context of a distribution of values.

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The time (t days) required to build a house is inversely proportion to the numbers of builders,All looking is same rate.If there

TiliK225 [7]

Answer:

30

Step-by-step explanation:

16 days is 16/80 = 1/5 the time for 6 builders, so the number of builders required is 1/(1/5) = 5 times that:

5 × 6 builders = 30 builders

6 0

3 years ago

Read 2 more answers

1. A two-dimensional form that occupies an area is called a(n) . 2. A(n) is a three-dimensional form that occupies a volume of s

MrRissso [65]

Answer:

1) Plane shape

2) Solid shape

3)

4) Perimeter

5) Aerial view

6) Shadow

7) Mensuration

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Step-by-step explanation:

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2 years ago

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A particular Spotify playlist contains 105 songs, of which 10 are by the Beatles. Suppose the shuffle feature is used to play th

katovenus [111]

Answer: The required probability is 0.3296.

Step-by-step explanation:

Since we have given that

Number of songs = 105

Number of songs are by the Beatles = 10

So, Number of songs are not by the Beatles = 105-10=95

So, the probability that the first Beatles song heard is the fifth song played is given by

$\dfrac{^{95}C_4\times ^{10}C_1}{^{105}C_5}\\\\=0.3296$

Hence, the required probability is 0.3296.

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3 years ago

Find the modulus of the complex number 6-2i

Papessa [141]

Answer:

The modulus of the complex number 6-2i is:

$|z|\:=2\sqrt{10}$

Step-by-step explanation:

Given the number

$6-2i$

We know that

$z = x + iy$

where x and y are real and $\sqrt{-1}=i$

The modulus or absolute value of z is:

$|z|\:=\sqrt{x^2+y^2}$

Therefore, the modulus of $6-2i$ will be:

$z=6-2i$

$z=6+(-2)i$

$|z|\:=\sqrt{x^2+y^2}$

$|z|\:=\sqrt{6^2+\left(-2\right)^2}$

$=\sqrt{6^2+2^2}$

$=\sqrt{36+4}$

$=\sqrt{40}$

$=\sqrt{2^2}\sqrt{2\cdot \:5}$

$=2\sqrt{2\cdot \:5}$

$=2\sqrt{10}$

Therefore, the modulus of the complex number 6-2i is:

$|z|\:=2\sqrt{10}$

3 0

2 years ago

When the hour hand moves from 3 pm to 6 pm, through how many degrees does it move?

taurus [48]

I think it might be 90 degrees

6 0

3 years ago