Code Churn is a common metric used to measure the efficiency and productivity of software engineers and computer programmers. It's usually measured as the percentage of a programmer's code that must be edited over a short period of time. Programmers with higher rates of
code chum must rewrite code more often because of errors and inefficient programming techniques. The following table displays sample information for 10 computer programmers.
DATA
Total Lines of Code
Programmer
Written
Number of Lines of Code
Requiring Edits
Liwel
23,789
4,589
Andrew
17,962
2,780
Jaime
31,025
12,080
Sherae
26,050
3,780
Binny
19,586
1,890
Roger
24,786
4,005
Dong-Gil
24,030
5,785
Alex
14,780
1,052
Vivek
30,875
3,872
21,546
4,125
Probability
0.1929
0.1547
0.3893
0.1451
0.0964
0.1615
0.2407
0.0711
0.1254
0.1914
Round your answers to four decimal places.
b. If you randomly select a line of code from Liwel, what is the probability that the line of code will require editing? Round your answer to four decimal places.
c. If you randomly select a line of code from Sherae, what is the probability that the line of code will require editing? Round your answer to four decimal places.