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How do you calculate Beta by using Variance and Covariance?
You can use the slope function on excel which takes a cell range representing the Y-Variable and another cell range representing the X-Variables. For instance the Y-Variable may be a column of excess returns for a stock and the X-Variable maybe the column of risk premia.
Is the gender of college students a discrete random variable a continuous random variable or not a random variable?
It is a discrete random variable.
What does variable held constant mean?
The distinction between these two types of variables is whether the variable regress on another variable or not. Like in a linear regression the dependent variable (DV) regresses on the independent variable (IV), meaning that the DV is being predicted by the IV. Within SEM modelling this means that the exogenous variable is the variable that another variable regresses on. Exogenous variables can be recognized in a graphical version of the model, as the variables sending out arrowheads, denoting which variable it is predicting. A variable that regresses on a variable is always an endogenous variable even if this same variable is used as an variable to be regressed on.
What is the the variable you change to see how it will affect the dependent variable?
independent variable
What type of variable has an unpredictable impact on the dependent variable?
A random variable.
Is saving a stock variable?
no, it a flow variable
Is GDP a stock variable or a flow?
Flow
Is inflation a stock variable?
flow
Do Balance sheet come under stock variable or flow variable?
yea
What is stock variables?
A variable that depends on an instant rather than a flow of time
What is the difference between a stock variable and a flow variable?
A stock variable is measured at one specific time, and represents a quantity existing at that point in time (say, December 31, 2004), which may have accumulated in the past. A flow variable is measured over an interval of time. Therefore a flow would be measured per unit of time (say a year). Flow is roughly analogous to rate or speed in this sense
What are the examples of flow variables in economics?
Labour is a variable,Population,Stock etc are variables
Is investment spending flow or stock variable?
Investment spending is a flow variable. It denotes the amount of money spent on purchasing new physical capital or increasing the stock of existing capital during a particular period of time, typically a year. It is different from the stock variable, which represents the total accumulation of physical capital at a given point in time.
Why would you want to export a variable in Unix?
You export a variable in one process so that a child process can have the value as well. If you don't export the variable then the child process cannot see it.
What are the examples of stock variable and flow variable?
A stock variable measures a variable at a specific point in time, for example the amount of foreign direct investment at the moment in a specific country. This variable is only denominated in terms of a currency. A flow variable on the other hand looks at the measure of a variable over a period of time, for example the GDP of a country as this variable looks not only at a fiscal amount but also also a time amount (in this case the amount of money spent in the economy over the course of a year).
Is savings a flow variable?
No, savings is a stock variable. It represents the accumulation of past income that has not been spent. Flow variables, on the other hand, measure the rate at which a quantity changes over a specific time period.
Why is wealth a flow concept?
No, it is a stock measure, as in, it is measured at a given point in time. Income on the other hand IS a flow measure, you must specify a time period for it ex. income per month or per year.
