What is the mean absolute deviation for 7,5,1,6,2 and 3

mean absolute deviation = 2

Step-by-step explanation:

Mean absolute deviation, M.A.D is given by

M.A.D= 1/n ∑ |Xi-X|

where i= 1 to n

X= mean of values

Xi= ith value

n=total number of values

Now\given values are 7,5,1,6,2 and 3

Mean= 7+5+6+1+2+3/6

  X= 4

Now

M.A.D= 1/6{(|7-4|+|5-4|+|1-4| +|6-4|+|2-4| +|3-4|}

        = 1/6 (12)

         =2 !

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places