chapter 1.1-1.3
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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| Statistics | The science of planning studies and experiments, obtaining data, organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions based on the data.
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| Data | Collections of observations. Examples: measurements, genders, survey responses
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| Population | The complete collection of all individuals to be studied
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| Census | Collection of data from every member of a population
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| Sample | Subcollection of members selected from a population
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| Voluntary Response Sample | A sample for which the respondents themselves decide whether to be included.
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| Context | Description of what the values represent.
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| Source | The researchers geting all the data.
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| Sampling Method | The samples that you choose to use to collect sample data. Example: Voluntary response sample
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| Conclusions | Making statements that are clear to those without any understanding of statistics and its terminology.
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| Pratical Implications | A practical conclusion. A statement that could be true.
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| Statistical Significance | a statistical assessment of whether observations show a pattern rather than being just a chance.
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| Practical Significance | a limit where an observed difference is of some practical use in the real world
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| Parameter Vs. Statistic | Parameter: numerical measurement describing some characteristic of a population. Statistic: numerical measuremetn describing some characteristic of a sample.
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| Quantitative Vs. Categorical | Quantitative data: consiste of numbers representing counts or measurements. Categorical data: consists of names or labels that are not numbers representing counts or measurements.
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| Discrete Vs. Continuous | Discrete data result when the number of possible valuse is either a finite number or a "countable" number. Continuous data result from infinitely many possible values that correspond to some continuous scale that covers a range of values without gaps,
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| Levels of Measurements | Ratio, interval, Nominal, Ordinal
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| Nominal | Categories only. Data cannot be arranged in an ordering scheme.
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| Ordinal | Categories are ordered, but differences can't be found or are meaningless.
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| interval | Differences are meaningful, but there is no natural zero starting point and ratios are meaningless
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| Ratio | Theres is a natural zero starting point and ratios are meaningful.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
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.
To hide a column, click on the column name.
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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