Using the following data, calculate the mean absolute deviation:
10 7 1 6 7 9 8 10 2 5
what is the mean absolute deviation for these data?
2
2.4
6.5
7

Which of the following statement about pascal's triangle are true?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.