Students reported practicing violin during the last semester for 45, 38, 52, 58, and 42 hours. what is the mean absolute deviation for the number of hours students practiced the violin? round to the nearest tenth. 6.4 6.8 32 47

Mean  absolute deviation = 6.4

Step-by-step explanation:

Given : Data  45, 38, 52, 58, and 42 hours.

To find : What is the mean absolute deviation for the number of hours students practiced the violin? Round to the nearest tenth.

Solution : We have given that

45, 38, 52, 58, 42

Mean Deviation = Σ|x − μ|/N.

Where, x =  given values like 45,38...etc

           μ = mean .

       N  = total number of values .

We need to find mean =

   Mean (  μ ) = 47.

|x − μ| = |45 − 47| = 2

|38− 47| = 9

|52− 47| = 5

|58− 47| = 11

|42− 47| = 5

Then Mean Deviation =

Mean  absolute deviation = 6.4

Therefore ,Mean  absolute deviation = 6.4

answer: options?

step-by-step explanation:

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer