Differentiate between planned and actual saving and investment.
Answer: There is a big difference between (a) planned S and I and (b) Actual saving and investment.
Planned saving is what house-hold plan to save and planned investment is what the investors plan to invest.
Since they are distinct set of people, planned saving and investment might or might not be equivalent.
However actual saving investment form an accounting recognizes and are, there bound to be equivalent.
This is as:
C + S = Y = C + I
Y = C + S
Y = C + I
Thus, S = I