SaiBook.us Statistics

Lesson Example Discussion Quiz: Class Homework

Quiz At Home

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: at Home

Problem Id	Problem	Options
1	Determine the mean and variance of the random variable X having the following probability distribution. $1$	A) Mean=0.8,Variance=0.79 B) Mean=0.6,Variance=0.45 C) Mean=1.2,Variance=0.67 D) Mean=1.9,Variance=0.89
2	Determine the mean and variance of the random variable X having the following probability distribution. $2$	A) Mean=29.1,Variance=1.15 B) Mean=22.1,Variance=1.29 C) Mean=25.1,Variance=1.45 D) Mean=24.1,Variance=1.67
3	Determine the mean and variance of the random variable X having the following probability distribution. $3$	A) Mean=3.35,Variance=2.68 B) Mean=2.41,Variance=1.15 C) Mean=3.45,Variance=4.57 D) Mean=2.45,Variance=5.61
4	Determine the mean and variance of the random variable X having the following probability distribution. $4$	A) Mean=63.35,Variance=2.68 B) Mean=62.41,Variance=1.15 C) Mean=63.03,Variance=1.507 D) Mean=62.45,Variance=3.61
5	Determine the mean and variance of the random variable X having the following probability distribution. $5$	A) Mean=18.78,Variance=0.79 B) Mean=20.16,Variance=0.45 C) Mean=21.42,Variance=0.67 D) Mean=27.32,Variance=1.65

Problem Id

Problem

Options

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

A) Mean=0.8,Variance=0.79
B) Mean=0.6,Variance=0.45
C) Mean=1.2,Variance=0.67
D) Mean=1.9,Variance=0.89

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

A) Mean=29.1,Variance=1.15
B) Mean=22.1,Variance=1.29
C) Mean=25.1,Variance=1.45
D) Mean=24.1,Variance=1.67

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

A) Mean=3.35,Variance=2.68
B) Mean=2.41,Variance=1.15
C) Mean=3.45,Variance=4.57
D) Mean=2.45,Variance=5.61

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

A) Mean=63.35,Variance=2.68
B) Mean=62.41,Variance=1.15
C) Mean=63.03,Variance=1.507
D) Mean=62.45,Variance=3.61

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

A) Mean=18.78,Variance=0.79
B) Mean=20.16,Variance=0.45
C) Mean=21.42,Variance=0.67
D) Mean=27.32,Variance=1.65