Sum of all grades / number of students = average grade
Average grade = 80
number of students = 1514 (excluding payton)
80 * 1514 = 121120
Average grade = 81
number of students = 1515
81 * 1515 = 122715
Sum of 1515 students = 122715
Sum of 1514 students = <u>121120</u>
Difference: 1595 *Paytons grade
Answer:
Thank you for the freeeee points.
Step-by-step explanation:
Answer:
y=4/3x-7
Step-by-step explanation:
Answer:
Option B) 9.1
Step-by-step explanation:
We are given the following in the question:
Average score = 490.4
Standard deviation = 63.7
Sample size, n = 49
Formula:

Putting values, we get,
Standard error =

Thus, the correct answer is
Option B) 9.1