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Stemplots &Histograms

Stemplots &Histograms. Stemplot – (Stem & Leaf) – Let’s find our pulse rates. What’s your height? Compare. Male. Female. Sometimes we have to truncate the data. Grade point avg. Make & describe a stemplot. 229 247 347 246 198 260

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Stemplots &Histograms

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  1. Stemplots &Histograms

  2. Stemplot – (Stem & Leaf) – Let’s find our pulse rates.

  3. What’s your height? Compare. Male Female

  4. Sometimes we have to truncate the data.

  5. Grade point avg.

  6. Make & describe a stemplot 229 247 347 246 198 260 320 360 414 214 218 276 197 406 261 347 223 196 202 628

  7. Histogram: Class width • 32 44 21 • 45 38 40 22 Range = Largest – Smallest

  8. mpg of cars:

  9. Actually…I can use any scale that I choose! mpg of cars:

  10. Salaries of CEO’s (nearest thousand):

  11. # credit card returns: (on the calculator…)

  12. 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)

  13. Categorical Graphs

  14. Quantitative Graphs

  15. Homework • Page 43 (53, 55, 56, 59, 65, 79,81, 83, 85)

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