Study Guide 3.4
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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z score (standarizd value) | the number of standerd deviation that a given value x is above or below the mean; The z score is caculated by using the folling
Sample or population
round z scores to two decimal places(such as 2.46)
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percentile | are one type of quantitites or factiles which partition data into groups with roughly the same number of values in each group; are measures of location denoted P1,P2,...,P99 which divide a set of data into 100 groups(with about 1% of the values in each gr
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ordinary values | -z<z score <z
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unusual values | z score< -z or z score> z
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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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