Kirsten calculated the mean of 10 quiz scores. Later she was told there was an error in grading one of her quizzes. A quiz score
of 79 was revised to 89. How will this grading revision affect the calculated mean of Kirsten's quiz scores?
Answer Options with 4 options
A. The mean will stay the same.
B. The mean will be 1 point higher.
C. The mean will be 5 points higher.
D. The mean will be 10 points higher.
The answer would be D. The mean will be 10 points higher. The question said that the quiz score changed from a 79 to an 89 which is exactly 10 points higher than the previous score. I hope this answer helps. :)
C = πd. In this equation, "C" represents the circumference of the circle, and "d" represents its diameter. That is to say, you can find the circumference of a circle just by multiplying the diameter by pi. Plugging π into your calculator will give you its numerical value, which is a closer approximation of 3.14 or 22/7.
The radius is half as long as the diameter, so the diameter can be thought of as 2r. Keeping this in mind, you can write down the formula for finding the circumference of a circle given the radius: C = 2πr. In this formula, "r" represents the radius of the circle. Again, you can plug π into your calculator to get its numeral value, which is a closer approximation of 3.14.
