Make & describe a stemplot for the following weights in pounds
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Transcript of Make & describe a stemplot for the following weights in pounds
Make & describe a stemplot for the following weights in pounds
229 247 347
246 198 260
320 360 414
214 218 276
197 406 261
347 223 196
202 628
Histograms
Histogram: Class width
Range = Largest – Smallest
Rangewidth =
#classes
28 32 44 21
45 38 40 22
mpg of cars: 27 21 23 25 25
25 23 22 24 27
29 28 22 38 18
26 33 27 52 43
Establishing Classes
*You don’t have to use that process!
*You can pick anything that makes sense…as long as the class sizes are of equal size.
Salaries of CEO’s (nearest thousand):
250 621 262
750 368 659
862 204 206
149 350 242
145 396 572
# credit card returns:
36 57 75 73
32 49 63 35
35 35 47 39
28 42 41 24
Using the calculator
Put data in L1 Go to 2nd y= Turn on, turn on histogram (make sure xlist is
L1 or whatever list your data is in) Hit zoom9 Go to window. Set xmin to smallest value
and scl = class width. Press graph. (Trace will show all values)
Homework
Worksheet (1-3)