Statistics Test 1
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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| show | is an individual entity in a study
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| variable | show 🗑
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| Sample data | show 🗑
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| Population data | show 🗑
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| statistic | show 🗑
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| show | summary measure of population data.
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| show | consist of group or category names that don’t necessarily have a logical ordering. Examples: eye color, country of residence.
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| ordinal variables | show 🗑
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| show | consist of numerical values taken on each individual. Examples: height, number of siblings.
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| explanatory variable and response variable | show 🗑
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| relative frequency distribution | show 🗑
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| A frequency distribution for a categorical variable | show 🗑
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| show | useful for summarizing one or two categorical variables and particularly useful for making comparisons when there are two categorical variables.
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| Pie Charts: | show 🗑
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| show | high and low
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| show | medians of lower and upper halves of the values
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| show | a data point that is not consistent with the bulk of the data
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| Shape | show 🗑
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| show | variability e.g. difference between two extremes or two quartiles.
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| Location | show 🗑
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| show | similar to bar graphs, used for any number of data values.
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| Stem-and-leaf plots and dotplots | show 🗑
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| show | useful summary for comparing two or more groups.
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| To illustrate shape | show 🗑
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| show | any of the pictures work well
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| show | use stem-and-leaf plots and dotplots.
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| To sort values | show 🗑
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| show | using the standard definition, use a boxplot.
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| compare groups, | show 🗑
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| What would outliers do to the mean | show 🗑
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| The Influence of Outliers on the Mean and Median | show 🗑
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| Range | show 🗑
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| Interquartile Range (IQR) = | show 🗑
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| show | median of data values that are below the median
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| show | median of data values that are above the median
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| Quartile Percentiles | show 🗑
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| show | “bell-shaped”. A special case is called a normal distribution or normal curve.
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| show | measures variability by summarizing how far individual data values are from the mean.
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| Descriptive Statistics | show 🗑
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| show | using sample information to make conclusions about a broader range of individuals than just those observed.
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| Population | show 🗑
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| Sample | show 🗑
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| Census: | show 🗑
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| show | every conceivable group of units of the required size from the population has the same chance to be the selected sample.
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| Sample Survey | show 🗑
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| Advantages of a Sample Survey over a Census | show 🗑
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| show | occurs if method for selecting participants produces sample that does not represent the population of interest.
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| show | occurs when a representative sample is chosen but a subset cannot be contacted or doesn’t respond.
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| show | occurs when participants respond differently from how they truly feel
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| show | Divide population of units into groups (called strata) and take a simple random sample from each of the strata.
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| show | Divide population of units into groups (called clusters), take a random sample of clusters and measure only those items in these clusters.
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| Systematic Sampling | show 🗑
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| show | Using a combination of the sampling methods, at various stages.
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| show | Method approximates a simple random sample of all households in the United States that have telephones.
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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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Created by:
talennna
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