Ask Question
26 November, 12:51

Katherine earned 84, 92, 84, 75, and 70 on her five math tests.

What is the minimum grade Katherine needs to earn on the next test to have a mean of 84?

+5
Answers (1)
  1. 26 November, 13:33
    0
    Katherine's marks = 84,92,84,75,70

    Total marks = 84+92+84+75+70 = 405

    No. of observations = 5

    Mean = Total sum of observations/No. of observations

    Mean = 405/5=81

    Expected mean = 84

    Let expected total marks be = n

    84=n/5

    84*5=n

    n=420
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Katherine earned 84, 92, 84, 75, and 70 on her five math tests. What is the minimum grade Katherine needs to earn on the next test to have ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers