Probability Probability & Odds& Odds

Surveys & Surveys & SamplesSamples

Measures of Measures of central central tendencytendency

Stem-and-Stem-and-Leaf Plots & Leaf Plots & HistogramsHistograms

Box-and-Box-and-whisker Plotswhisker Plots

100 100 100 100 100

200 200 200 200 200

300 300 300 300 300

400 400 400 400 400

500 500 500 500 500

Probability & Odds

• What is the probability of rolling a dice and getting a number less than 5?

Back

100

Probability & Odds

• You spin the spinner 20 times. It stops on an odd number 8 times. What is the experimental probability of stopping on an odd number?

Back

200

Probability & Odds

• What are the odds in favor or picking a blue ball from the box?

Back

300

Probability & Odds

• What is the probability of spinning a multiple of 2?

Back

400

Probability & Odds

• What are the odds against drawing a face card in a standard deck of cards?(Face cards are jack, queen, king)

Back

500

Surveys & Samples

• “Do you prefer creamy macaroni and cheese or bland rice?”Is this question bias? Justify your answer.

Back

100

Surveys & Samples

• In an effort to reduce the occurrence of late payments, a credit card company wants to gather information. Every 20th customer in their database is called.What is the sampling method?

Back

200

Surveys & Samples

• A community hospital conducts a survey to determine patient satisfaction. One hundred patients are randomly selected to complete the survey.Identify the population and sample.

Back

300

Surveys & Samples

• Your school is conducting a survey on a proposed dress code. The first 20 students entering the school in the morning are surveyed. What type of sampling method is used?

Back

400

Surveys & Samples

• In a survey about the need to improve driver safety, 50 randomly selected adults at a senior-citizen resident facility were asked, “Do you think driver safety would improve if drivers were required to pass a driving test every ten years when renewing a driver’s license?”Is the sampling method likely to result in a biased sample? Explain your reasoning.

Back

500

Measures of Central Tendency

• What is the range of the data set?

4, 9, 13, 6, 2, 5, 8, 3, 15, 6, 18, 15, 14

Back

100

Measures of Central Tendency

• What is the mode of the data set?

43, 32, 55, 44, 41, 32, 55, 57, 62, 55, 61

Back

200

Measures of Central Tendency

• What is the sum of the median and mode of the data set?

43, 32, 55, 44, 41, 32, 55, 57, 62, 55, 61

Back

300

Measures of Central Tendency

• You have scored 67, 89, 75, and 91 on four of your five tests for the semester. You have set the goal of having a test average of 82 or better. What is the lowest test score you can get and still meet your goal?

Back

400

Measures of Central Tendency

• What is the mean of the data represented in the frequency table?

Back

500

ScoreFrequency

15 4

17 2

20 2

25 3

27 1

S-&-L and Histograms

• Describe the distribution of the stem-and-leaf plot.

Back

100

S-&-L and Histograms

• What is the range of the data set represented in the stem-and-leaf plot?

Back

200

S-&-L and Histograms

• How many babies weighed less than 120 ounces?

Back

300

S-&-L and Histograms

• What is the sum of the range of data set A and the range of data set B?

Back

400

SET A SET B

S-&-L and Histograms

• Give an example of intervals that you could use when making a histogram from the data set.47, 45, 53, 56, 54, 43, 47, 55, 50, 42, 53, 41

Back

500

Box-and-Whisker Plots

• Approximately what percent of the data is greater than 39?

100

Back

Box-and-Whisker Plots

• Identify the lower quartile, upper quartile, and median from the box-and-whisker plot.

200

Back

Box-and-Whisker Plots

• What is the interquartile range?

300

Back

Box-and-Whisker Plots

• Identify any outliers.

400

Back

Box-and-Whisker Plots

• Identify any outliers.

500

Back