at the beginning of the day, the dow jones index was at $10,287.56. At the end of the day it was at $10,005.23. What was the rate of change of the Dow Jones on this particular day? Express your answer as percentage and round to 2 decimal places.
(10,287.56 - 10,005.23) / 10,287.56 = ?
Multiply your decimal answer by 100 to get the percentage.
2.74438=2.74
0.03%
To calculate the rate of change of the Dow Jones index, we need to find the difference between the beginning and ending values, and then express it as a percentage of the original value.
Step 1: Find the difference
The difference between the beginning and ending values can be calculated by subtracting the starting value from the ending value:
Difference = Ending Value - Starting Value
Difference = $10,005.23 - $10,287.56
Step 2: Calculate the rate of change
To express the difference as a percentage of the original value, divide the difference by the starting value and multiply by 100:
Rate of Change = (Difference / Starting Value) * 100
Now we can calculate the rate of change:
Rate of Change = (10,005.23 - 10,287.56) / 10,287.56 * 100
Using a calculator, we can find:
Rate of Change ≈ -2.74% (rounded to 2 decimal places)
Therefore, the rate of change of the Dow Jones index on this particular day is approximately -2.74%.