Texas Instruments TI-83 Plus Manual page 20

The first line displays the sample mean, Ë = 78 million dollars. The fourth line displays the
sample standard deviation, Sx = 34.4 million dollars. Use the down arrow key to see that the
median payroll is 75 million dollars. The interquartile range is found by subtracting the two
quartiles Q3−Q1 = 109.5 − 48 = 61.5 million dollars. The range is maxX − minX = 126 − 34 =
92 million dollars.
Example: Concert Revenues
The following table contains the top twelve concert revenues of all time. Let's describe the
center and spread of these revenues.
Tour
Steel Wheels, 1989
Magic Summer, 1990
Voodoo Lounge, 1994
The Division Bell, 1994
Hell Freezes Over, 1994
Bridges to Babylon, 1997
Popmart, 1997
Twenty-Four Seven, 2000
No Strings Attached, 2000
Elevation, 2001
Popodyssey, 2001
Black and Blue, 2001
First enter the data into a list labeled CON.
Use 1-Var Stats CON.
The sample mean Ë is 90.05 million dollars and the
sample median Med is 84.45 million dollars.
The population standard deviation is σ =
14.23 million dollars, the range is maxX − minX =
121.2 − 74.1 = 47.1 million dollars, and the interquartile
range is Q3 − Q1 = 100.75 − 79.65 = 21.10 million dollars.
Artist
The Rolling Stones
New Kids on the Block
The Rolling Stones
Pink Floyd
The Eagles
The Rolling Stones
U2
Tina Turner
'N-Sync
U2
'N-Sync
The Backstreet Boys
20
Total Revenue
(millions of dollars)____
98.0
74.1
121.2
103.5
79.4
89.3
79.9
80.2
76.4
109.7
86.8
82.1