Open the Excel Spreadsheet: ACTIVITY Population Biology Data Analysis Perform data analysis for: Cockroach Find the "r" value for Cockroach. Enter the "r" numerical value in the cell to the right of r: (cell B6). Press ENTER after you enter the "r" value for Cockroach. CHANGE the No: default value from 2 to 10. What is the projected population number at N3 (after 3 generations)? Enter the number below as a numerical value.

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Open the Excel Spreadsheet: ACTIVITY Population Biology Data Analysis
Perform data analysis for: Cockroach
Find the "r" value for Cockroach.
Enter the "r" numerical value in the cell to the right of r: (cell B6). Press ENTER after you enter the "r" value for Cockroach.
CHANGE the No: default value from 2 to 10.
What is the projected population number at N3 (after 3 generations)?
Enter the number below as a numerical value.
Transcribed Image Text:Open the Excel Spreadsheet: ACTIVITY Population Biology Data Analysis Perform data analysis for: Cockroach Find the "r" value for Cockroach. Enter the "r" numerical value in the cell to the right of r: (cell B6). Press ENTER after you enter the "r" value for Cockroach. CHANGE the No: default value from 2 to 10. What is the projected population number at N3 (after 3 generations)? Enter the number below as a numerical value.
Population growth model Notes
Population growth
Using discrete time steps, which is easier to describe that continuous change, the model for population growth is this:
N₁
Try changing the blue numbers, for "r" (rate) and "N0" (start population), below.
r:
No:
Nort
Moose: 1.5
House fly: 80
***
80 Time step (t) (N) Population at end of time step (N₁)
2
0
1
2
3
4
5
6
7
8
9
10
Wolf: 1.2
Z żż ź żż žžžžž ž
Cockroach: 40
2
N₁ 160
No
12800
1024000
81920000
6553600000
5.24288E+11
4.1943E+13
3.35544E+15
2.68435E+17
N10 2.14748E+19
N₂
N3
N4
N5
N6
Try these hypothetical "r" values to begin, then try new numbers of your own:
N7
N8
N9
Rabbit: 5
Endangered tiger: 0.8
Transcribed Image Text:Population growth model Notes Population growth Using discrete time steps, which is easier to describe that continuous change, the model for population growth is this: N₁ Try changing the blue numbers, for "r" (rate) and "N0" (start population), below. r: No: Nort Moose: 1.5 House fly: 80 *** 80 Time step (t) (N) Population at end of time step (N₁) 2 0 1 2 3 4 5 6 7 8 9 10 Wolf: 1.2 Z żż ź żż žžžžž ž Cockroach: 40 2 N₁ 160 No 12800 1024000 81920000 6553600000 5.24288E+11 4.1943E+13 3.35544E+15 2.68435E+17 N10 2.14748E+19 N₂ N3 N4 N5 N6 Try these hypothetical "r" values to begin, then try new numbers of your own: N7 N8 N9 Rabbit: 5 Endangered tiger: 0.8
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