1. 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

2. Create a Histogram for the # credit card returns: 36577573 32496335 4739 28424124

3. Using the calculator Put data in L1 Go to 2 nd 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)

4. More on Histograms

5. Car Speed (mpg) 18 to < 25 10.313.313 25 to < 32 14.438.75 32 to < 39 4.125.88 39 to < 46 2.063.94 46 to < 53 2.063 1.00 Frequency Relative Cumulative freq freq 1.What percent get less that 39 mph? 2.What percent at least 39 mph? 3.What is the mph for the top 12% of cars?

6. WeightFreq.Rel. FreqCum R. F 180-2004 0.07 200-2208.13.2 220-24015.25.45 240-26020.33.78 260-2807.12.9 280-3006.11 1.What percent weigh less than 240? 2.What percent weigh at least 229? 3.What is the cut off for the bottom 45%?

7. WeightFreq.Rel. FreqCum R. F 180-2004.07 200-2208.13.2 220-24015.25.45 240-26020.33.78 260-2807.12.9 280-3006.11 1.What percent weigh 260 or more? 2.What percent weigh 235 or more? 3.What is the cutoff for the heaviest 10%?

8. WeightFreq.Rel. FreqCum R. F 180-2004.070.07 200-2208.13.2 220-24015.25.45 240-26020.33.78 260-2807.12.9 280-3006.11 1.What percent weigh between 220 and 240? 2.What percent weigh between 240 and 250?

9. Time(mth)Freq.Rel. FreqCum R. F 0-62.022 6-1210.112.135 12-1821.236.371 18-2428.315.685 24-3022.247.933 30-366.0671 1.What percent did not malfunction in the 1 st 2 years? 2.What percent required replacement within 1.5 and 2.5 years? 3.At what time had 50% failed? 4.What percent lasted at least 30 months?

10. More on Histograms Density Histograms

11. Density = This ensures that the area of the rectangle is proportional to the corresponding frequency.

12. ClassFreqRel. Freq.Density 0 - 0.14 0.1 - 0.28 0.2 - 0.410 0.4 - 2.012

13. ClassFreqRel. Freq.Density 0 - 106 10 - 2012 20 - 4020 40 - 6018 60 - 10014

14. ClassFreqRel. Freq.Density 0 -10024 100 - 30028 300 - 60030 600 - 100026

15. Graph the following: Class Freq. 20-40 35 40-60 27 60-100 20 100-200 10 200 – 800 28

16. Bivariate

17. Ojive – cumulative frequency graph Ages Freq. 13 – 19 5 19 – 25 8 25 – 31 11 31 – 37 20 37 – 43 6 1.Find the cumulative frequencies 2.Plot beginning of class on the horizontal axis and the cumulative frequencies on the vertical axis.

18. Time Series – Line plot that plots each observation against the time of the observation. YearLife expectancyYearLife expectancy 190048.3196073.1 191051.8197074.7 192054.6198077.5 193061.6199078.8 194065.2200079.5 195071.1

19. Scatter plots Graphs an ordered pair. Put the data in L1 and L2 Press 2 nd Stat Plot to turn the graph on Press ZOOM 9 to graph

20. Create a scatterplot & find the line of best fit. Wt Cl (kg) Total Lifted (kg) 46140 50127 54165 59167 64192 70185 76198 83200

21. Let’s try another one! Use it to predict the sodium for 40 g of fat. Fat (g)Sodium 19920 311500 341310 35860 391180 39940 431260

22. Homework Worksheet Bring colored candy for lab tomorrow!