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.

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Presentation transcript:

Make & describe a stemplot for the following weights in pounds

Create a Histogram for the # credit card returns:

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)

More on Histograms

Car Speed (mpg) 18 to < to < to < to < to < 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?

WeightFreq.Rel. FreqCum R. F What percent weigh less than 240? 2.What percent weigh at least 229? 3.What is the cut off for the bottom 45%?

WeightFreq.Rel. FreqCum R. F What percent weigh 260 or more? 2.What percent weigh 235 or more? 3.What is the cutoff for the heaviest 10%?

WeightFreq.Rel. FreqCum R. F What percent weigh between 220 and 240? 2.What percent weigh between 240 and 250?

Time(mth)Freq.Rel. FreqCum R. F 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?

More on Histograms Density Histograms

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

ClassFreqRel. Freq.Density

ClassFreqRel. Freq.Density

ClassFreqRel. Freq.Density

Graph the following: Class Freq –

Bivariate

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