Question

the park service records the number of reported rattle - snake sightings on bald mountain trail and camel back trail. the data gives rise to the following stacked bar graph.
rattle snake sightings
use the stacked bar graph to fill in the contingency table below.
rattle snake sightings
year
trail 2016 2017 2018 total
bald mountain
camel back
total

Explanation:

Step1: Read 2016 data

From the bar - graph, for 2016 on Bald Mountain Trail, the height of the blue part is 3. For Camel Back Trail, the height of the orange part is 7.

Step2: Read 2017 data

For 2017 on Bald Mountain Trail, the height of the blue part is 6. For Camel Back Trail, the height of the orange part is 4.

Step3: Read 2018 data

For 2018 on Bald Mountain Trail, the height of the blue part is 3. For Camel Back Trail, the height of the orange part is 5.

Step4: Calculate totals

For Bald Mountain Trail: 3 + 6+3 = 12. For Camel Back Trail: 7 + 4+5 = 16. Total for 2016: 3 + 7 = 10. Total for 2017: 6 + 4 = 10. Total for 2018: 3 + 5 = 8. Grand - total: 12 + 16 = 28.

Answer:

Trail	2016	2017	2018	Total
Camel Back	7	4	5	16
Total	10	10	8	28