The mean absolute deviation for the number of hours students practiced the violin is 6.4.
<h3>What is the mean absolute deviation?</h3>
The average absolute deviation of the collected data set is the average of absolute deviations from a center point of the data set.
Given
Students reported practicing violin during the last semester for 45, 38, 52, 58, and 42 hours.
The given data set is;
45, 38, 52, 58, 42
Mean Deviation = Σ|x − μ|/N.
μ = mean, and N = total number of values
|x − μ| = |45 − 47| = 2
|38− 47| = 9
|52− 47| = 5
|58− 47| = 11
|42− 47| = 5
The mean absolute deviation for the number of hours students practiced the violin is;

Hence, the mean absolute deviation for the number of hours students practiced the violin is 6.4.
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brainly.com/question/5003198
Answer: 396
Step-by-step explanation:
It is 396 because you change the percentage to a decimal and then multiply it by the big number and one you have done that you multiply it again by 3.
The result of the log function
is 60
According to the law of logarithm if
then 
Given the following expressions

This can be expressed as

Substitute the value of m and n into the expression
to have:

This shows that the result of the log function
is 60
Learn more here: brainly.com/question/12049968
6.8,6.827,6.86,6.9
1.2,1.203,12.03, 12.301,12.31