Hi. I am currently working on my IA1 Specialist maths PSMT and am very stuck and in talking to the rest of my grade we are all confused. The task asks us to consider personal data sets we have been given for the northern hairy nosed wombat, and to create a mathematical model where the population will increase above 5000. My problem is I have only been given the initial population (1935), birth (fecundity) rate and survival rate for the first eight years (f1/s1 ect) and no f0 or S0. There are no age brackets given to us. As I know we must create a Leslie matrix I am unsure of how to approach this without age brackets. I would very appreciate some help and Thank you.
Urgent Specialist maths help
- Edited
Chips_
Hey Chips_ (and thanks for the mention @jinx_58),
Yeah, there are a few issues I see. So, for a Leslie matrix, you actually don't need an "age bracket", strictly speaking; you only need the data for each age. For example, the survival and fecundity rate for 3-year-olds. However, from the information you've given, you also need the breakdown of the initial population into each of the ages. So right now, you've got the total population (i.e. 1935) but you need the population for each age (e.g. there are 300 8-year-olds, 435 9-year-olds etc.). So, the things you need to build a Leslie matrix is:
- initial population data for each age
- survival rates for each for each age
- fecundity rates for each age
You won't have data for the last age because you assume they will die after that age.
I hope this answered your question and if you need help with building the Leslie matrix, you could send a screenshot of the task sheet with the data and I can help you out with that.
- PP