what is a correlation?
identifying a relationship between 2 variables
positive correlation
when an increase in one variable results in an increase in the other variable
negative correlation
when an increase in one variable results in a decrease in the other variable
zero correlation
a relationship between two variables cannot be determined
what is used to show correlation?
scatter graphs
what do scatter graphs allow businesses to do?
extrapolate data
extrapolation
using past data trends to predict future performance
what are moving averages?
they show whether a trend is significant by smoothing out fluctuations of data
three period moving averages
allow businesses to use three sets of data to calculate an average for future predictions
why might qualitative judgements sometimes outweigh quantitative judgements of forecasting?
provides a more detailed insight
-customers can share how they truly feel about product, business etc and preferences can be monitored
disadvantages of quantitative techniques
-changes in external environmental can impact the business’ future performance
-changes in internal environment can impact the business’ future performance
-quantitative sales forecasting is time-consuming and complex
-may be over-optimistic especially if business leader is new or bias
what changes in external environmental can impact quantitative techniques
PESTLE
political
environmental
social
technological
legal
economic
what changes in internal environmental can impact quantitative techniques
culture
leadership
financial performance
advantages of using quantitative techniques
requires little training to carry out methods
good for stable products e.g. in maturity stage of life cycle