She scores 76 marks for the next test. What is the mean mark for the four tests?How to calculate?
add up the total points and divide by 4.
To calculate the mean mark for the four tests, you need to add up the marks for all four tests and then divide the sum by four.
Let's assume the marks for the four tests are:
Test 1: x
Test 2: y
Test 3: z
Test 4: 76 (the score she got for the next test)
To calculate the mean, you need to add up all the marks:
x + y + z + 76
Now, divide the sum by four to get the mean mark:
Mean = (x + y + z + 76) / 4
Once you have the values for x, y, and z, you can substitute them into the equation and calculate the mean mark for the four tests.