Question

From these data you need to determine the number of individuals that survived to each age, starting with the original 91 at age 0.

OBSERVATIONS FROM THE FIELD The following data are collected from the field from an unharvested population of parrots. Listed are longevity data from a cohort of 91 females and fecundity data from a sample of 25 females. The data are only from females because reproductive output in males is difficult to measure. We will assume that life table estimates for females also apply to males. The longevity data are the age at death (in years) of a sample cohort member. For example, #91 at 0.1 years represents individual #91 that died at age 0.1 years (or about 1 month): orean at 02 #1 at 4.2 years, #34 af 3.3 years, #67 at 8.8 years, #2 at 5.0 years, #35 at 5.0 years, #68 at 0.7 years, #3 at 5.0 years, #36 at 0.7 years, #69 at 7.6 years, #4 at 0.9 years, #37 at 2.9 years, #70 at 1.2 years, #5 at 2.3 years, #38 at 7.3 years, #71 at 1.0 years, #6 at 3.7 years, #39 at 27 years, #72 at 30 years, #7 at 3.2 years, #40 at 2.2 years, #73 at 3.9 years, #8 at 1.4 years, #41 at 24 years, #74 at 3.3 years, #9 at 1.0 years, #42 at 4.0 years, #75 at 0.7 years, #10 at 0.2 years, #43 at 0.2 years, #76 at 3.2 years, #11 at 1.0 years, #44 at 2.0 years, #77 at 7.4 years, #12 at 2.2 years, #45 at 0.2 years, #78 at 1.0 years, #13 at 1.0 years, #46 at 0.1 years, #79 at 6.2 years, #14 at 1.2 years, #47 at 5.0 years, #80 at 5.0 years, #15 at 6.0 years, #148 at 0.9 years, #81 at 2.2 years, #16 at 0.1 years, #49 at 3.3 years, #82 at 0.1 years, #17 at 4.1 years, #50 at 0.7 years, #83 at 7.0 years, #18 at 0.3 years, #51 at 5.2 years, #84 at 6.9 years, #19 at 2.0 years, #52 at 0.4 years, #85 at 0.3 years, #20 at 0.1 years, #53 at 1.0 years, #86 at 5.7 years, #21 at 6.4 yours, #54 at 2.2 years, #87 at 2.2 years, #22 at 0.1 years, #55 at 0.1 years, #88 at 4.4 years, #23 at 1.2 years, #56 at 0.2 years, #89 at 1.0 years, #24 at 3.0 years, #57 at 1.0 years, #90 at 3.2 years, #25 at 1.2 years, #58 at 3.0 years, #91 at 0.1 years, #26 at 5.0 years, #59 at 0.9 years, #27 at 1.9 years, #60 at 0.3 years, #28 at 1.6 years, #61 at 4.7 years, #29 at 5.7 years, #62 years ears, pears tours, as roars wears #12 years at 3.0 years. Not years, #57 at 10 years years, #56 at 0.2 years old years, #55 #60 at 0.3 years, 12820 at 5.0 years, #59 S W25 at 1.2 years. #58 4 orze 6 7 8 9

Answer 1

Data of 82 individuals are given and they are arranged according to the ages. The numbers represent the tag numbers of each bird not their ages.

For ex - 0.3 yrs -18,85,60. Here 0.4 yrs is the age of the individual and 18,85,60 are the tag numbers of the parrot .Thus a total of 3 individuals survive upto 0.3 yrs.

You can calculate the number of individuals thereby age wise.

0.1 yrs - 22, 55,91 , 46 , 16 , 82 , 20

0.2 yrs - 10, 43, 45,46

0.3 yrs - 18, 85,60

0.4 yrs- 52

0.7 yrs - 68,36,75,50

0.9 yrs- 4,48,59

1.0 - 71,9, 11,78,13, 53, 89, 57

1.2 yrs - 70,14,23,25

1.4 yrs - 8

1.6 yrs- 28

1.9 yrs- 27

2.0 yrs- 44, 19

2.2 yrs - 40, 12,81,54,87

2.3 yrs - 5

2.4 yrs- 41

2.7 yrs - 39

2.9 yrs - 37

3.0 yrs - 24, 58

3.2 yrs - 7, 76, 90

3.3 yrs - 34,74,49

3.7 yrs - 6

3.9 yrs - 73

4 yrs - 72, 42 (please check about number 72 since the age is not visible due to the cursor in your screenshot)

4.1 yrs - 17

4.2 yrs - 1

4.4 yrs - 88

4.7 yrs - 61

5.0 - 2, 35, 3, 47, 80, 26

5.2 yrs - 51

5.7 yrs - 86, 29

6.0 yrs - 15

6.2 yrs - 79

6.4 yrs - 21

6.9 yrs - 84

7.0 yrs - 83

7.3 yrs - 38

7.4 yrs - 77

7.6 yrs - 69