Using the formula, find the coefficient of skewness for each distribution, and describe the shape of the distribution.

a. mean 10, median 8, standard deviation 3.
b. mean 42, median 45, standard deviation 4.
c. mean 18.6, median 18.6, standard deviation 1.5.
d. mean 98, median 97.6, standard deviation 4.

a) As =  0.67  right skewness

b) As =  -0.75  left skewness

c) As =  0   ( Symmetric )

d) As = 0.1 ( slightly unsimmetric ) right skewness

Step-by-step explanation:

We will use the formula

As = skewness coefficient

μ  = mean of distribution

Μ = median of distribution

And Pearson formula :     As = ( μ - Μ) / σ

a)  As = ( 10- 8 ) /3      =2/3  = 0.67

The distribution is right-skewness  (positive skewness)

b) As = ( 42 - 45 ) / 4  = -3/4 = -0.75

The distribution is left skewness  (negative skewness)

c) As = ( 18.6 - 18.6 )/ 1.5      = 0

The curve of the distribution is is symmetric

d) As = ( 98 - 97.6 ) / 4    = 0.4/4  = 0.1

The distribution is right skewness (slightly unsimmetric)

i think it would be c

mark brainliest if im right

step-by-step explanation:

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !