There are 341 calories in 1 Roast Beef Sandwich. Calorie breakdown: 36% fat, 31% carbs, 32% protein.
Definition of Correlation: Correlation is a statistical technique that is used to measure and describe the STRENGTH and DIRECTION of the relationship between two variables. Correlation requires two scores from the SAME individuals.
For example, for the two variables hours worked and income earned there is a relationship between the two if the increase in hours worked is associated with an increase in income earned. If we consider the two variables price and purchasing power, as the price of goods increases a person's ability to buy these goods decreases (assuming a constant income). Correlation is a statistical measure (expressed as a number) that describes the size and direction of a relationship between two or more variables. A correlation between variables, however, does not automatically mean that the change in one variable is the cause of the change in the values of the other variable. Causation indicates that one event is the result of the occurrence of the other event; i.e. there is a causal relationship between the two events.