# 1-3

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question
How do a parameter and a statistic​ differ?
A parameter is a numerical measurement of a​ population; a statistic is a numerical measurement of a sample.
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Determine whether the given value is a statistic or a parameter: The mean weight for doctors is 170 lbs
The value is a parameter because it is a numerical measurement describing some characteristic of a population.population.
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Determine whether the given value is a statistic or a parameter: In a study of all 3915 students at a college, it is found that 35% own a television
Parameter because the value is a numerical measurement describing a characteristic of a population
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Determine whether the given value is a statistic or a parameter: A homeowner measured the voltage supplied to his home on one day a week for a given year, the average (mean) value is 137.2 volts
The given value is a statistic for the year because the data collected represents a sample
question
A particular country has 45 total states. If the areas of 30 states are added and the sum is divided by 3030​, the result is 192 comma 332192,332 square kilometers. Determine whether this result is a statistic or a parameter.
The result is a statistic because it describes some charactertistic of a sample.
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Determine whether the given value is from a discrete or continous data set: When a bus is randomly selected, it is found to have a engine with 143 hp
It is from continuous data set because the number of possible values in infinite and not countable.
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Determine whether the given value is from a discrete or continuous data set: When a car is randomly selected and weighed, it is found to weight 1689.9 kg
A continuous data set because there are infinetly many possible values and those values cannot be counted.
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Determine whether the given value is from a discrete or continuous data set: Volume of liquid in a glass is 350 mL
Continuous
question
Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate: Favorite types of music
Nominal
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Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate: Car lengths measured in feet
The ratio level of measurement is the most appropriate because the data can be ordered, differences can be found and are meaningful, and there is a natural starting zero point.
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Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate: Types of movies (drama, comedy, adventure, documentary, ect.)