AS+1.10+Statistics

Back to year 11 page "Investigate a given multivariate data set using the statistical enquiry cycle" 4 credits

Internal Achievement Standard

Multivariate = lots of things that are measured

 * In ordinary people's terms: **

//You're given a load of data with lots of measured values (multivariate data). // //This data is a SAMPLE taken from a larger population. // //You have to choose a variable that you'd like to investigate, work out how to divide the data into two comparable groups and ask a QUESTION that relates back to the population that the data came from. For example you might have heights of 3 yr old children and be wanting to compare the heights of girls vs boys. // //You then have to analyse the data, draw graphs to represent the chosen variable of the two groups within your sample, discuss the distributions and come up with a theory (= INFERENCE) about the population that the data came from and ANSWER YOUR QUESTION. // //All of your statements must be in the CONTEXT of the situation/variables and you must be strong in your description, showing that you understand that this is one sample only and a different person's data might come up with a different theory - this shows your understanding of SAMPLING VARIABILITY. // //Reflect on the process, how could it be improved, what limitations are there etc. This all helps to show your level of understanding. //


 * == Question, prediction, why? ==
 * == Clean the data and calculate statistics ==
 * == Draw graphs ==
 * == Analyse distributions (graphs) - comments comparing ==
 * == In context ==
 * == Sample vs population ==
 * == Inference = Theory about population ==
 * == Answer your original question ==
 * **Reflect**