2024-02-04T01:45:54+03:00[Europe/Moscow] en true <p>What frequency distributions are most appropriate for nominal-level variables?</p>, <p>What frequency distributions are most appropriate for ordinal-level variables?</p>, <p>What frequency distributions are most appropriate for interval/ratio-level variables? </p>, <p>Is it appropriate to use a cumulative percent distribution with a survey on respondents preferred mode of transportation? </p>, <p>It is appropriate to use a relative frequency distribution with data on the number of kids per household in a neighborhood? </p>, <p>Is it appropriate to use a relative frequency distribution and a cumulative frequency distribution with data on how many kids of a student body make up each grade at a high school?</p>, <p>What are the best or most appropriate ways to display nominal-level data? </p>, <p>What are the best or most appropriate ways to display ordinal-level data? </p>, <p>What are the best or most appropriate ways to display interval/ratio-level data? </p>, <p>When should you use the mode of a data set?</p>, <p>When should you use the median of a data set?</p>, <p>When should you use the mean of a data set? </p>, <p>If a graph of income levels in America is 'positively skewed' what does that mean? </p>, <p>If a graph of education levels in America is 'negatively skewed' what does that mean? </p>, <p>When is the range of a distribution useful?</p>, <p>When is the IQR of a distribution useful?</p>, <p>When is the variance of a distribution useful?</p>, <p>When is the standard deviation of a distribution useful?</p> flashcards

Visualizing Data Exercises

When to use relative and/or cumulative frequencies When to use which measure of central tendency on which level of measurement Properties of level of measurement variables Finding the range, IQR, variance, and standard deviation

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  • What frequency distributions are most appropriate for nominal-level variables?

    Raw and relative frequency

  • What frequency distributions are most appropriate for ordinal-level variables?

    Raw, relative, and cumulative frequencies

  • What frequency distributions are most appropriate for interval/ratio-level variables?

    Raw, relative, and cumulative frequencies along with class intervals

  • Is it appropriate to use a cumulative percent distribution with a survey on respondents preferred mode of transportation?

    NO - because this is a nominal-level variable (can't be ranked)

  • It is appropriate to use a relative frequency distribution with data on the number of kids per household in a neighborhood?

    YES - because this is an interval/ratio-level variable (can be ranked with clear distinction between intervals)

  • Is it appropriate to use a relative frequency distribution and a cumulative frequency distribution with data on how many kids of a student body make up each grade at a high school?

    YES - because this is an ordinal-level variable (can be ranked)

  • What are the best or most appropriate ways to display nominal-level data?

    Raw and/or relative frequency

    Mode

    Pie charts and bar charts

  • What are the best or most appropriate ways to display ordinal-level data?

    Raw, relative, and cumulative frequencies can be used

    Median and sometimes mode if you're interested in the most common answer

    Bar charts and pie charts

  • What are the best or most appropriate ways to display interval/ratio-level data?

    Raw, relative, and cumulative frequencies can be used along with class intervals

    Mean and sometimes median and mode

    Histograms

  • When should you use the mode of a data set?

    Nominal-level variables

    To quickly measure ordinal or interval/ratio-level variables

    When you're interested in the most common answer

  • When should you use the median of a data set?

    Ordinal-level variables

    Interval/ratio data that's skewed

    When you're interested in the 50th percentile

  • When should you use the mean of a data set?

    Interval/ratio-level data that's relatively symmetrical

    If you're doing even further statistical analysis

  • If a graph of income levels in America is 'positively skewed' what does that mean?

    There are a couple of extremely large values 'pulling' the tail to the right

    It means that the mean is greater than (>) the median

  • If a graph of education levels in America is 'negatively skewed' what does that mean?

    There are a couple of extremely low values 'dragging' the tail down to the left

    It means that the mean is less than (<) the median

  • When is the range of a distribution useful?

    When you want to know the difference between the lowest and highest score

  • When is the IQR of a distribution useful?

    When you want to find the middle 50% of a distribution

    When you only care about the middle and 'average' values of a distribution since it ignores outliers either way

  • When is the variance of a distribution useful?

    When you want to know how far each observation is from the mean of the distribution (how much each observation varies from the 'average')

  • When is the standard deviation of a distribution useful?

    When you want to or need to return data to it's original form/metric