Lab Activity 1 
Math 113 
Name : ______________ 
10 pts 
Intro to Applied Stats 

Materials Needed:
Calculator
 Use your calculator to generate a set of 20 random numbers between 50 and 150, inclusive.
Save the 20 values into list 1. The following command will do this for you.
seq(int(101*rand+50),x,1,20,1) > L_{1}
The "seq" function can be found under the [List] (2^{nd} [Stats]) key. Choose the "Ops" menu and then option 5.
The ">" symbol is the [Sto>] key that is located right above the [On] key.
This is our original data and will be known as x. x+10 will mean to add 10 to all the original
data values, x*10 will mean to multiply each data value by 10, and so on. Since this is
random data, everyone will have different answers for this page. Do not expect the same
answers as your neighbor.
 Record the mean, median, range, sample standard deviation, and sample variance in the table
for each data set.
To find the sample statistics for the original data in L_{1}, enter the command 1Var Stats
L_{1}. To find the sample statistics for any of the four manipulated data sets, enter the
appropriate command for the manipulation like: L_{1}+30>L_{2}, L_{1}*4>L_{2}, or L_{1}/4>L_{2} and
then find 1Var Stats L_{2}. Give all answers to two decimal places.

Mean 
Median 
Range 
Std Dev 
Variance 
x






x+50






x10






x*2






x/4






 When a constant is added to (subtracted from) all values in the sample, what is the effect on
the each of the five statistics listed?
 Mean
 Median
 Range
 Standard Deviation
 Variance
 When all the data is multiplied (divided) by a constant, what is the effect on each of the five
statistics listed.
 Mean
 Median
 Range
 Standard Deviation
 Variance
 Use the information from above to complete the following table.
Data 
Mean 
Median 
Range 
Std Dev 
Variance 
x 
60 
52 
32 
20 
400 
x  60 





(x60)/20 





 If a new set of data is found by taking the original data, subtracting the mean, and then
dividing by the standard deviation; the new mean will be _________ and the new standard
deviation will be __________.