Question

here is a table giving the thousands of commuters in alabama in 2015 by transportation method and one - way length of commute:
commute duration (one - way) private vehicle public transportation other total
< 15 minutes 498 1 27 526
15 - 29 minutes 748 2 8 758
30 - 44 minutes 387 2 4 393
45 - 59 minutes 145 1 0 146
≥ 60 minutes 109 3 3 115
total 1887 9 42 1938
find the marginal distribution of transportation method in counts.

Explanation:

Step1: Sum up private vehicle column

$498 + 748+387 + 145+109=1887$

Step2: Sum up public transportation column

$1 + 2+2 + 1+3=9$

Step3: Sum up other column

$27 + 8+4 + 0+3=42$

Answer:

Private vehicle: 1887, Public transportation: 9, Other: 42