SaiBook.us Statistics

Lesson Example Discussion Quiz: Class Homework

Quiz In Class

Title: Mean and variance of discrete random variable

Grade: 9-a Lesson: S4-L2

Explanation: Hello Students, time to practice and review. Let us take next 10-15 minutes to solve the five problems using the Quiz Sheet. Then submit the quiz to get the score. This is a good exercise to check your understanding of the concepts.

Quiz: in Class

Problem Id	Problem	Options
1	Determine the mean and variance of the random variable X having the following probability distribution. $1$	A) Mean=68.43,Variance=1.06 B) Mean=81.59,Variance=1.27 C) Mean=54.27,Variance=0.95 D) Mean=75.68,Variance=0.78
2	Determine the mean and variance of the random variable X having the following probability distribution. $2$	A) Mean=1.98,Variance=0.725 B) Mean=1.06,Variance=0.945 C) Mean=1.45,Variance=0.658 D) Mean=1.23,Variance=0.418
3	Determine the mean and variance of the random variable X having the following probability distribution. $3$	A) Mean=6.14,Variance=0.76 B) Mean=4.25,Variance=0.34 C) Mean=2.67,Variance=0.87 D) Mean=5.21,Variance=0.98
4	Determine the mean and variance of the random variable X having the following probability distribution. $4$	A) Mean=5,Variance=0.7 B) Mean=7,Variance=0.3 C) Mean=9,Variance=0.8 D) Mean=8,Variance=0.6
5	Determine the mean and variance of the random variable X having the following probability distribution. $5$	A) Mean=3,Variance=2.56 B) Mean=4,Variance=1.23 C) Mean=1,Variance=0.56 D) Mean=0,Variance=0

Problem Id

Problem

Options

Determine the mean and variance of the random variable X having the following probability distribution. $1$

A) Mean=68.43,Variance=1.06
B) Mean=81.59,Variance=1.27
C) Mean=54.27,Variance=0.95
D) Mean=75.68,Variance=0.78

Determine the mean and variance of the random variable X having the following probability distribution. $2$

A) Mean=1.98,Variance=0.725
B) Mean=1.06,Variance=0.945
C) Mean=1.45,Variance=0.658
D) Mean=1.23,Variance=0.418

Determine the mean and variance of the random variable X having the following probability distribution. $3$

A) Mean=6.14,Variance=0.76
B) Mean=4.25,Variance=0.34
C) Mean=2.67,Variance=0.87
D) Mean=5.21,Variance=0.98

Determine the mean and variance of the random variable X having the following probability distribution. $4$

A) Mean=5,Variance=0.7
B) Mean=7,Variance=0.3
C) Mean=9,Variance=0.8
D) Mean=8,Variance=0.6

Determine the mean and variance of the random variable X having the following probability distribution. $5$

A) Mean=3,Variance=2.56
B) Mean=4,Variance=1.23
C) Mean=1,Variance=0.56
D) Mean=0,Variance=0