AICP Data Analysis
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| sample | a subset of population about which data are collected when it is too costly to collect data on entire populaiton
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| Typical sample size | 1% ; larger sample sizes can lead to more accurate results
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| to increase accuracy | larger sample size and random sampling
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| Nominal or categorical | the measures are names or categories; e.g. democrat / republican
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| Ordinal or ranking | there is an order to the different measures; socioeconomic status
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| Interval | where the interval between the different measures has meaning; degrees Celsius, temperature
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| Ratio | properties of interval variables as well as a clear definition of zero; height of building
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| control variables | the independent variables that are not manipulated by the study but may have an impact on the outcome of a project
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| Mean | arithmetic average; not always a good measure of central tendency because extreme values or outliers can distort the statics
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| Median | the 50th percentile; better a measure of central tendency because it is less influenced by outliers than mean
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| Variance | a measure of how spread out a distribution is
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| Standard deviation | the sq root of the variance; used to describe the degree of which a distribution is spread out
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| Chi square | a statics used to suggest whether ther might be a relationship b/w two nominal or categorical variables
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| Linear regression | the influence of one or more independent variables on a dependent variable when certain assumptions are met
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| Problem Definition | 1.define problem;2.specify boundaries of problem;3.develop fact base;4.list goals and objectives;5.identify range of solutions(alternatives);6.define potential costs and benefits;7.review problem statement and refine as appropriate
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To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Jae Min