Statistics-Target+B-Summarize+Your+Data-Practice+Problems


 * Target 1B: Summarize Categorical data from a two way frequency table (include joint, marginal, and conditional relative frequencies**

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 * 1) Check out this video:**

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 * This piqued your interest in biking to school and you took a survey in you class of 30 students and the results are as follows:**


 * 1a) How many boys are in the set?**


 * 1b) How many girls are in the set?**


 * 1c) How many students can bike?**


 * 1d) How many girls can't bike?**


 * 1e) Create a two way frequency table (with respect to the table total).**


 * 1f) With respect to the total what percent of girls could bike?**


 * 1g) Create a two way frequency table (with respect to the rows).**


 * 1h) What percent of boys could bike?**


 * 1i) Create a two way frequency table (with respect to the columns).**


 * 1j) What percent of of people that could bike are girls?**


 * 2) There are 150 children at a local pool are signed up in the aquatic sports of which 61 signed up for swim team. There were a total of 52 children that signed for water polo and 28 of them also signed up for swim team. Use the two-way frequency table below to summarizing the data.**

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 * 2a) How many children did not sign up for water polo? Does this represent a marginal or joint frequency?**


 * 2b) How many students did not sign up for either water polo or swim team? Does this represent a marginal or joint frequency?**


 * 3) You are in charge of boosting profits for the concession stand at the basketball games. You decide to do some research. On Friday night as each person entered the basketball game, you counted how many of the 400 people had a hotdog, a slice of pizza, soda and bottled water. You found that out of 182 people that had Pizza, 120 chose soda and only four did not have a drink. 50 people bought a hotdog and a soda. 158 people bought hotdogs. Ten people walked in without any food or a drink. The stand sold 200 sodas and 140 waters. Using this data, fill in the @two way frequency table and determine the marginal frequencies of the data.**

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 * 3a) What was the joint frequency of people who ordered pizza AND a drink?**


 * 3b) Based on the data, is it more likely that people will order pizza without a drink or a hot dog without a drink? Justify your answer using information from the @frequency table.**