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8.3 Using Statistics to Predict Predict actions of a larger group by using a sample
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Turn and Talk <ul><li>What shows do you watch on tv? </li></ul><ul><li>Do you have any restrictions on what you watch on tv? </li></ul><ul><li>Do you have any restrictions on how much tv you watch? </li></ul><ul><li>How are tv ratings determined? </li></ul>
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Television Ratings <ul><li>http://www.digitalspy.co.uk/forums/showthread.php?t=208480 </li></ul>
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Many kids watch TV unrestricted <ul><li>Nearly half of children 8 to 17 have no parental restrictions on how much TV they watch or what programs or channels they watch. </li></ul>No restrictions 46% Some restrictions 54%
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What ages of kids are represented? <ul><li>Nearly half of children 8 to 17 have no parental restrictions on how much TV they watch or what programs or channels they watch. </li></ul>No restrictions 46% Some restrictions 54%
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Can you tell how many were surveyed? Explain. <ul><li>Nearly half of children 8 to 17 have no parental restrictions on how much TV they watch or what programs or channels they watch. </li></ul>No restrictions 46% Some restrictions 54%
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Describe how you could use the graphic to predict how many students in your school have no restrictions on their television viewing. <ul><li>Nearly half of children 8 to 17 have no parental restrictions on how much TV they watch or what programs or channels they watch. </li></ul>No restrictions 46% Some restrictions 54%
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Quickwrite <ul><li>Create a definition for each of the following </li></ul><ul><ul><li>SURVEY </li></ul></ul><ul><ul><li>POPULATION </li></ul></ul><ul><ul><li>RANDOM SAMPLE </li></ul></ul>
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T-table <ul><li>Random Sample </li></ul><ul><li>Examples Non Example </li></ul>
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Example 1 . Predict how many of the 1,250 Gallatin Middle School students have some restrictions on the television that they watch. No restrictions 46% Some restrictions 54%
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Example 2 . Predict how many of the 1,250 Gallatin Middle School students have no restrictions on the television that they watch. No restrictions 46% Some restrictions 54%
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The table shows the results of a survey in which people were asked whether their house pets watch television. <ul><li>Predict how many of the 540 people surveyed said their pets watch TV. </li></ul>2% Don’t know 60% No 38% Yes Percent Response Does your pet watch television?
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A survey showed that 70% of people 12 to 17 years old use the internet to send instant messages. Predict how many of the 2,640 students at Washington Middle School send instant messages.
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According to one survey, 25% of high school students reported they would not get a summer job. Predict how many of the 948 students at Mohawk High School will not get a summer job.
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