3 years ago

What is the standard deviation of this data set? 12, 14, 9, 11, 10, 15, 16, 12, 7, 14

Mathematics

1 answer:

Tju [1.3M]3 years ago

4 0

Answer:

The standard deviation is 2.6832815729997

Step-by-step explanation:

SD^2=(12-12)^2+...+(14-12)^2/10

SD^2=72/10

SD^2=7.2

SD=squeare root of 7.2

SD=2.6832815729997

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A school cotains 357 boys and 323 girls if a student is chosen at random, what is the probability that it is a girl

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Answer:

$P(G)=0.475$

Step-by-step explanation:

From the question we are told that:

Number of boys $N_b=357$

Number of girls $N_g=323$

Total Number of students

$N_t=N_b+N_g$

$N_t=680$

Generally the equation for Probability of Choosing a Girl is mathematically given by

$P(G)=\frac{N_g}{N_t}$

$P(G)=\frac{323}{680}$

$P(G)=0.475$

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Identify the x- and y-intercepts of f(x) and the x- and y-intercepts of g(x). f(x) =3x−1;g(x)=2f(x)−4

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y-intercept:
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y-intercept:
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