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Exercise

Survey-weighted histograms

If we want to understand the distribution of nightly sleep for Americans, we should construct a histogram. Let's do that now and see the impact of changing the width of the bins.

Instructions 1/3

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  • 1

    Use geom_histogram, to map SleepHrsNight to x and WTMEC4YR, the sampling weights, to weight from NHANESraw. Set binwidth to 1.

  • 2

    Reconstruct the histogram but change binwidth to 0.5. Why are there now gaps in the histogram?

  • 3

    Reconstruct the histogram but change binwidth to 2. How did the shape of the histogram change?