Twenty words are chosen randomly from a fifth-grade science book, and twenty random words are chosen from a ninth- science book. The length of the words chosen are as follows:
5th Grade Textbook: 2, 4, 3, 6, 5, 5, 3, 7, 8, 4, 4, 1, 5, 2, 4, 1, 1, 4, 5, 3
9th Grade Textbook: 7, 9, 3, 4, 12, 9,5, 3, 4, 3, 9, 4, 8, 6, 5, 7, 9, 4, 8, 6
The mean absolute deviation is 1.45 for the fifth-grade text and 2.25 for the ninth-grade text. Which conclusion is reason
these measures?
A)
Longer words are in the ninth-grade textbook.
B)
More common words are in the fifth-grade textbook.
Word length varies more in the ninth-grade textbook.

answer: howdy

step-by-step explanation:

answer: none of these answers are correct only the second half is

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.