are nominal levels of measurements quantitative or qualitative?
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a parameter is based on population, and a statistic is based on a sample
what is the difference between a parameter and a statistic?
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ratio
length of time
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interval
time of first class
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nominal
major field of study
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ordinal
course evaluation scale: poor, acceptable, good
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ordinal
salesperson performance: below average, average, above average
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ratio
price of company’s stock
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nominal
names of new products
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interval
temperature in CEO private office
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simple random sample
assign each business in the island business directory a number, and then use a random-number table to select the businesses to be included in the sample.
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cluster sample
use postal ZIP codes to divide the state into regions. pick a random sample of 10 ZIP codes areas and then include all the businesses in each included sample
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convenience sample
send a team of five research assistants to bishop street downtown. let each assistant select a block or building and interview an employee from each business found. each researcher can have the rest of the day off after getting responses from 20 different businesses
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systematic sample
use the island business directory. number all the businesses. select a starting place at random, and then use every 50th business listed until you have 100 businesses.
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cluster sample
randomly select some MMH facilities from each five geographic regions, and then include all the patients on the discharge lists of the selected hospitals
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systematic sample
at the beginning of the year, instruct each MMH facility to survey each 500th patient discharged
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convenience sample
instruct each MMH facility to survey 10 discharged patients this week and send in the results
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divide the frequency by the total
how do you determine relative frequency?
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continuous variable
suppose the average American tosses away 4.9lbs of garbage every day. the amount of garbage tossed daily is the ______
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discrete variable
tires salvaged from a truck accident on i-80 are on sale at a particular tire store. of the 49 tires offered for sale, 7 of them have suffered internal damage, and the remaining 42 are free of damage. the number of damaged tires for sale from the truck accident is the ________
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statistic
a _______ is a number that describes a sample
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parameter
a _____ is a number that describes a population
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statistic
a survery of 4,000 americans found that 67% voted in the last election. the number 67% is a ________
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statistic
a jokester polled 200 people and asked if they enjoyed taking polls. 79% of the people asked said no. the number 79% is a ________
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size of the sample
a jokester polled 200 people and asked if they enjoyed taking polls. 79% of the people asked said no. the number 200 is the __________
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ratio
numeric data that have order, in which we know the exact value between units, and also have an absolute zero, are called ________
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nominal
discrete data in which data are neither measured nor ordered, but subjects are allocated to distinct categories, are called _______
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ordinal
a psychologist gauges patient’s responses on a scale of terrible, not great, okay, good, or great. what level is this an example of?
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smallest to largest
stem and leaf displays are in order of _______
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yes
does the number get put into the chart twice if it is repeated in the data in a stem and leaf chart
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largest to smallest
pareto charts go in order of
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spread out
are the columns touching or spread out in a pareto chart
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the categories being looked at
what goes on the bottom of a pareto chart
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divide the frequency by the total then multiply by 100
how do you turn the frequency into a percentage for a circle graph
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highest number - lowest number
\------------------------------------
desired number of classes
how do you find class width
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upper number + lower number
\----------------------------------
2
how do you find midpoint
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carry the first frequency over, and then add each frequency going down the chart; should end up with total
how do you find cumulative frequency?
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add the lowest number to (class width - 1) , and then add one to the beginning of the next row
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Flashcard (89)