close search
Hit Return to see all results

The time for degree completion was record below.Years465658Calculate the standard deviation.


The time for degree completion was record below.


4 6 5 6 5 8

Calculate the standard deviation.

Step 1


The number of observations on time for degree completion (years) is, n = 6. Denote xi as the ith observation; i = 1, 2, …, 6.

In order to find the standard deviation, first, it is necessary to calculate the mean as follows:

Step 2


The standard deviation is the square root of the variance. Now, the variance is calculated as follows:

Step 3

Standard deviation:

The standard deviation, σ, which is the square root of the variance, is:

σ = √(14/9) = √(14)/3 &asy...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in




Related Statistics Q&A

Find answers to questions asked by student like you

Show more Q&A add

Q: How much do wild mountain lions weigh? Adult wild mountain lions (18 months or older) captured and r...

A: In this question, we have the weighs of adult wild mountain lions, which is681071251276064 Using tha...


Q: Compute the probability of an event E if the odds in favor of E are 2/5.

A: Odds of an event:The odds an event is given by the ratio of the probability of the event to its prob...


Q: The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30. Fin...

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the ...


Q: 2. You are at Disney World and wait 45 minutes to ride the roller coaster at Space Mountain. Guests ...

A: The aim is to define the cycle time of the process and the throughput time.


Q: Is the magnitude of an earthquake related to the depth below the surface at which the quake occurs? ...

A: (a) Scatter diagram of the data:The line that best fits the data is least-squares regression line.Th...


Q: Construct a boxplot for these numbers of state sites for Frogwatch U.S.A Is the distribution symmetr...

A: The given data is arranged in ascending order as shown below199, 235, 238, 242, 253, 289, 294, 314, ...


Q: Please answer the whole question.  (1) Let x be the age in years of a licensed automobile driver. Le...

A: (e) The value of coefficient of determination:The given data is represented in the following table:


Q: Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, am...

A: Test statistic calculation:The test hypotheses are:Null hypothesis:H0: p = 0.03, that is, 3% in the ...


Q: Assume that a populatio of thousands of people whose responses were used to develop the anxiety test...

A: Hey, since there multiple subparts posted, we will answer first three subparts. If you want any spec...

Sorry about that. What wasn’t helpful?