Investigating the relationship between heights and weights of 50 girls in year 11.

RESULTS:

GRAPH:

COMPARISON:

CONCLUSION:

From my results I can see that there is slight positive correlation proving that my hypothesis was correct. The correlation coefficient (r) for the height and weight of 50 year 11 girls is √0.0738 = 0.27166155. The critical value of 50n is 0.2353 so; I can therefore say that my results have positive correlation. The correlation coefficient for the height and weight of 50 year 11 boys is √0.579 = 0.7609205, this is above the critical value for 50n so, I can therefore say that my results have a highly positive correlation.

EVALUATION:

I think my results have been successful and have proved my hypothesis correct, but if I was going to repeat the investigation I would have included the outliers and commented on the anomalies on my graph.