WPC 300 Exam 2 Ques ons and answers Newest RATED
A+ 2025/2026 NEW!!
The ______ is the observa on that occurs most frequently. - Ans mode
Which of the following is an example of a measure of dispersion? - Ans variance
For a normal distribu on mean is ____ to median. - Ans equal
Which of the following describes a posi vely skewed histogram? - Ans a histogram that tails
off towards the right
According to sta s cal nota on, what does ∑ stand for? - Ans to act as a summa on operator
Standard devia on of a normal data distribu on is a _____. - Ans measure of data dispersion
When two variable are highly posi vely correlated, the correla on coefficient will be _____. -
Ans close to 1
Which of the following is true for a median? - Ans For an even number of observa ons, the
median is the mean of the two middle numbers.
The difference between the first and third quar les is referred to as the ____. - Ans
interquar le range
Which of the following is an example for a sample? - Ans The number of IT employees out of
all employees working in an office of Google.
, You are collec ng data via an online survey to improve educa on standard at ASU. Which of the
following methods will not result in data collec on bias? - Ans Anonymously data collec on by
hiding ASU brand in the survey ques on.
Which of the following proposi on describes an exis ng theory or belief? - Ans Null
hypothesis
Which of the following is a Type-I error? - Ans The null hypothesis is actually true, but the
hypothesis test incorrectly rejects it.
What is the confidence interval when the level of significance is 0.07? - Ans 0.930
The central limit theorem states that if the popula on is normally distributed, then the - Ans
sampling distribu on of the mean will also be normal for any sample size
The WPC Sports Company has noted that the size of individual "customer order" is normally
distributed with a mean of $100 and standard devia on of $12. If a soccer team of 16 players
were to make the next batch of orders, what would be the standard error of the mean? - Ans 3
(12/sqrt(16)=12/4=3)
In order to reject the null hypothesis, the p-value must be less than the - Ans Alpha
Which of the following is a difference between the t-distribu on and the standard normal (z)
distribu on? - Ans The t-distribu on has a larger variance than the standard normal
distribu on
Which of the following is a con nuous random variable? - Ans The me to complete a specific
task
A+ 2025/2026 NEW!!
The ______ is the observa on that occurs most frequently. - Ans mode
Which of the following is an example of a measure of dispersion? - Ans variance
For a normal distribu on mean is ____ to median. - Ans equal
Which of the following describes a posi vely skewed histogram? - Ans a histogram that tails
off towards the right
According to sta s cal nota on, what does ∑ stand for? - Ans to act as a summa on operator
Standard devia on of a normal data distribu on is a _____. - Ans measure of data dispersion
When two variable are highly posi vely correlated, the correla on coefficient will be _____. -
Ans close to 1
Which of the following is true for a median? - Ans For an even number of observa ons, the
median is the mean of the two middle numbers.
The difference between the first and third quar les is referred to as the ____. - Ans
interquar le range
Which of the following is an example for a sample? - Ans The number of IT employees out of
all employees working in an office of Google.
, You are collec ng data via an online survey to improve educa on standard at ASU. Which of the
following methods will not result in data collec on bias? - Ans Anonymously data collec on by
hiding ASU brand in the survey ques on.
Which of the following proposi on describes an exis ng theory or belief? - Ans Null
hypothesis
Which of the following is a Type-I error? - Ans The null hypothesis is actually true, but the
hypothesis test incorrectly rejects it.
What is the confidence interval when the level of significance is 0.07? - Ans 0.930
The central limit theorem states that if the popula on is normally distributed, then the - Ans
sampling distribu on of the mean will also be normal for any sample size
The WPC Sports Company has noted that the size of individual "customer order" is normally
distributed with a mean of $100 and standard devia on of $12. If a soccer team of 16 players
were to make the next batch of orders, what would be the standard error of the mean? - Ans 3
(12/sqrt(16)=12/4=3)
In order to reject the null hypothesis, the p-value must be less than the - Ans Alpha
Which of the following is a difference between the t-distribu on and the standard normal (z)
distribu on? - Ans The t-distribu on has a larger variance than the standard normal
distribu on
Which of the following is a con nuous random variable? - Ans The me to complete a specific
task
