What is the most basic method of illustrating data?

frequency distribution


make sure your graph communicates only one idea

Two questions per thread.

What should you remember when creating figures? maintain the scale in the graph
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What is the most basic method of illustrating data? frequency distribution
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What is a method of tallying, and representing, how often a certain score occurs? frequency distribution
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What is an example of a table? frequency distribution
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What is an example of a chart/graph ?
Which of the following is not an example of a chart / graph? frequency polygon
frequency distribution
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In the graph, the scale should be approximately three to four
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A good rule of thumb when creating an illustration is: make sure your graph communicates only one idea
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Which of the following can be used to measure the shape of a distribution? kurtosis
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Kurtosis is used to... describe the shape of an attribution
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What you need to calculate first before calculating skewness? mean and median
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What you need to calculate first before calculating the kurtosis? mean and standard
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13. A distribution of scores in which almost the entire class scored very high, but a few students scored fairly low, would be: negatively skewed
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14. A distribution of scores in which almost the entire class scored very low, but a few students scored fairly high, would be: pasitively skewed
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15. What is the term associated with the upper or lower boundary of a set of scores used in the creation of a frequency distribution? class interval
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16. If you have a distribution of 50 scores and you want 10 intervals, what should be the size of your class interval? 5
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17. If you have a distribution of 100 scores and you want 20 intervals, what should be the size of your class interval? 20
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18. If you have a distribution of 20 scores and you want 2 intervals, what should be the size of your class interval? 10
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19. If you have a distribution of 50 scores and you want 5 intervals, what should be the size of your class interval? 10
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20. Optimally, when choosing a class interval, you should have approximately this many intervals covering the entire range of data: 10 to 20
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21. Which of the following is the best class interval? 20
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The largest class interval goes here on a frequency distribution: the top
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What type of graph displays class intervals along an x-axis? histogram
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24. What is a method of tallying and representing how often certain scores occur? frequency distribution
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25. What is a graphical representation of a frequency distribution? histogram
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27. This is a type of chart in which categories are organized horizontally on the x-axis, and values are shown vertically on the y-axis. column chart
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This is a type of chart in which categories are organized vertically on the y-axis, and values are shown horizontally on the x-axis in the form of separate, separated bars. bar chart
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This is a type of chart in which categories are organized vertically on the y-axis, and values are shown horizontally on the x-axis, which are connected by one or more lines line chart
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What is the frequency distribution that shows frequencies for class intervals along with the cumulative frequency for each? cumulative
frequency
distribution
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This is another word for "lopsidedness": skewness
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What do you call a continuous line that represents the frequency of scores within a class interval? polygon
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What is another name for a cumulative frequency polygon? ogive
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What is the term associated with the lack of symmetry in a distribution? skewness
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In order to say that a distribution is positively skewed, which of the following must be true? right tail must be longer than left
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When the left tail of a distribution's curve is longer the right, what is this called? negative skew
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When the right tail of a distribution's curve is longer the left, what is this called? positive skew
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What is the term associated with how flat or peaked a distribution appears? kurtosis
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Which of the following refers to distribution's curve that is relatively peaked in comparison to a normal curve? leptokurtic
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Which of the following refers to distribution's curve that is relatively flat in comparison to a normal curve? platykurtic
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If the mean of a set of scores is greater than the median, what can be said about the distribution? distribution is positively skewed
ex 100-95
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If the median of a set of scores is greater than the mean, what can be said about the distribution? distribution is negatively skewed
ex 85-90
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If you wanted to examine the proportion of students in this class who are male compared to female, which of the following might you use? column chart ??
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If you were interested in tracking your GPA during the time your are in graduate school, which of the following might you use? line chart ??
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Which of the following is a histogram most like? place values at equal distances along the x axis. then identify the midpoint in the class interval.
. class interval and midpoint on x axis
. frequency on y axis
page 55 ex
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What is another name for a frequency polygon? cumulative frequency polygon ( ogive)
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48. What is the horizontal axis on a graph called? x axis
class interval and midpoint
categories are organized horizontally on the x axis ( column chart)
bar chart: values on the x axis
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What is the vertical axis on a graph called? y axis
frequency
values are shown vertically on the y axis ( column chart)
bar chart: categories are organized on the y axis
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If a distribution is positively skewed, the ________ is greater than the __________. right tail is greater the left
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51. If a distribution is negatively skewed, the ________ is greater than the __________. left tail is greater than the right
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If the Mean = 34 and the Median = 25, then what can be said of the distribution? positively skewed
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If the Mean = 12 and the Median = 21, then what can be said of the distribution? negatively skewed
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If the Mean = 24 and the Median = 24, then what can be said of the distribution? no skewness
A zero value indicates that the values are relatively evenly distributed on both sides of the mean, typically (but not necessarily) implying a symmetric distribution.
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Two sets of scores with different measures of central tendency and variability will result in two different-looking distributions. read page 61 average value , variability , skewness, kurtosis
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A visual representation of data can be a much more effective way of illustrating the characteristics of a distribution or data set as compared with numerical values alone. true
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More is more: the more functions, features, etc. you can include on a graph, the better. false
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What is the central point of the class interval called? midpoint
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In order to say that a distribution is negatively skewed, which of the following must be true? left tail must be longer than the right