AnswersSS Integrated Math IIB 2026Performance Task: Applying Probability Concepts — Unit testQuestion 10
10
QuizMultiple Choice
Performance Task: Applying Probability Concepts — Unit test
Question 10 of 23 • SS Integrated Math IIB 2026
Emi computes the mean and variance for the population data set 87, 46, 90, 78, and 89. She finds the mean is 78. Her steps for finding the variance are shown below.What is the first error she made in computing the variance?
Answer
A
Emi failed to find the difference of 89 - 78 correctly.B
Emi divided by N - 1 instead of N.C
Emi evaluated (46 - 78)2 as -(32)2.D
Emi forgot to take the square root of -135.6.