Download - Please take out your homework articles. Would anyone want to give a summary and share their article?
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Please take out your homework articles.
•Would anyone want to give a summary and share their article?
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SECTION 1-3
Types of Data
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Types of Data
Parameter vs. StatisticQuantitative vs. CategoricalDiscrete vs. ContinuousNominal, Ordinal, Interval, and Ratio
Measurement
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Types of Data
Parameter vs. StatisticQuantitative vs. CategoricalDiscrete vs. ContinuousNominal, Ordinal, Interval, and Ratio
Measurement
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Parameter vs. Statistic
Parameter: Describes population
Statistic: Describes sample
Determine which is statement is a statistic and which is a parameter It is known that 10% of the players on the Chicago
Cubs have earned a college degree. 4% of 100 MLB players surveyed say that they
have earned a college degree.
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Types of Data
Parameter vs. StatisticQuantitative vs. CategoricalDiscrete vs. ContinuousNominal, Ordinal, Interval, and Ratio
Measurement
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Types of Data
Parameter vs. StatisticQuantitative vs. CategoricalDiscrete vs. ContinuousNominal, Ordinal, Interval, and Ratio
Measurement
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Quantitative vs. Categorical
Quantitative: Numbers that represent count or measure
Categorical: Names or labels with no measure or count
Determine if the statement represents categorical or quantitative data Derrick Rose’s jersey number which is #1 Derrick Rose’s 21.0 points per game Derrick Rose’s team the Chicago Bulls
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Quantitative vs. Categorical
A note on quantitative data Units are crucial!
Thousands of dollars, kilograms, hundredths of a second
Mars Rover accident! Used American instead of metric units
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Types of Data
Parameter vs. StatisticQuantitative vs. CategoricalDiscrete vs. ContinuousNominal, Ordinal, Interval, and Ratio
Measurement
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Types of Data
Parameter vs. StatisticQuantitative vs. CategoricalDiscrete vs. ContinuousNominal, Ordinal, Interval, and Ratio
Measurement
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Discrete vs. Continuous
Discrete: The data is countable (0, 1, 2, 3, 4,…) always COUNTED
Continuous: The data can be any value on an infinite scale of continuous numbers (1, 20, 1.675834, 3.14, etc.) usually MEASURED
Determine whether the data is continuous or discrete The amount of milk in a glass (measured in ounces) The number of bottles of milk in a shipment The height of an Olympic athlete
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Types of Data
Parameter vs. StatisticQuantitative vs. CategoricalDiscrete vs. ContinuousLevels of Measurement
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Types of Data
Parameter vs. StatisticQuantitative vs. CategoricalDiscrete vs. ContinuousLevels of Measurement
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Levels of Measurement
Type Meaning
Ratio There is a natural zero starting point and ratios are meaningful
Interval Differences are meaningful, but there is no natural zero starting point and ratios are meanings
Ordinal Categories are ordered, but differences can’t be found or are meaningless
Nominal Categories only. Data cannot be arranged in an ordering scheme
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SECTION 1 .3
STOPLIGHT
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Stoplight – Round 1
A study of all 2223 passengers aboard the Titanic found that 706
survived when it sank.
Statistic
Unsure Parameter
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Stoplight – Round 2
In New York City, there are 3250 walk buttons that pedestrians can press at traffic intersections. It was found that
77% of those buttons do not work.
Statistic
Unsure Parameter
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Stoplight – Round 3
You randomly spot a group of ten girls in the hallway and 6 of them have brown
hair.
Statistic
Unsure Parameter
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Stoplight – Round 4
The amount of sugar in a coke can is 39.5 grams.
Discrete
Unsure Continuous
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Stoplight – Round 5
The volume of cola in a can of regular Coke is 12 oz.
Discrete
Unsure Continuous
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Stoplight – Round 6
In a test of a method of gender selection developed by the Genetic and IVF
Institute, 726 couples used the XSORT method and 668 of them had baby girls.
Discrete
Unsure Continuous
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Stoplight – Round 7
The weights of OHS students.
Quantitative
Unsure Categorical
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Stoplight – Round 8
The names of OHS students.
Quantitative
Unsure Categorical
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Stoplight – Round 9
Critic ratings of movies on a scale from 0 star to 4 stars.
Nominal
Ordinal Interval
Ratio
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Stoplight – Round 10
Actual temperatures (in degrees Fahrenheit).
Nominal
Ordinal Interval
Ratio
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Stoplight – Round 11
Companies (Disney, MGM, Warner Brothers, Universal, 20th Century Fox)
that produce movies.
Nominal
Ordinal Interval
Ratio
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Homework
p.16-17: #5-6, 13-14, 27-28