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Past Exam for STAT 100 - ELEM STAT & PROB at Maryland (UMD)

Exam Information

Material Type:Exam 1
Professor:Staff
Class:STAT 100 - ELEM STAT & PROB
Subject:Statistics and Probability
University:University of Maryland
Term:Spring 2004
Keywords:
  • Either...or
  • Transmission
  • Combinations
  • The Independent
  • Conditioning
  • Calculators
  • Exclusive Or
  • Independence
  • Probabilities
  • Distribution
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Sample Document Text

---,- Stat 100 Exam 1 A Spring 2004 Calculators allowed All work must be showl1to receive full credit. 1. A sample of 6 quiz scores were recorded as follows: 1, 4, 8, 2, 9, 6. a) (8 pts) Calculate the mean and standard deviatioll. b) (8 pts) Calculate the median and the range. c) (4 pts) Make a dot plot of the data. 2. For the following 4 pairs of values: a) (5 pts) plot a scatter diagram b) (10 pts) calculate the equation of the regression line and draw it on the scatter diagram c) (5 pts) without making calculations, estimate the value of the correlation coefficient and explain what it indicates for this data. x 0 3 5 8 Y 2 3 5 6 3. An automobile dealership has 50 cars on their lot. Each car has either an automatic or a manual transmission; furthermore, each car mayor may not have air-conditioning. Use the following data to solve this exercise: 32 of the cars have air-conditioning, 24 cars have automatic transmission, 17 cars have air-conditioning and a manual transmissi...

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