With our predictions we normally cannot be completely confident in our predictions. It is useful to discuss other factors that may be influencing the predictions and how much effect these will have on your predictions.
This is a great time to include some extra research.
For each of the graphs make comments about your predictions.
The first two have been done for you.
We can’t be completely certain about our predictions as there are a number of factors that could be affecting the amount of sea ice. One of these factors is possibly global temperatures which is affected by sun spots (NASA, 2014).
We can't be completely certain about our predictions as there are a number of factors that could be affecting the number of male live births. One of these factors is the economic conditions as when times are tougher people think more before having children, so it depends on what happens to New Zealand’s economy as to how many live births there are likely to be.