Hi there! This is what I’ve done to finish my week 3 assignment.

## Warning: `arrange_()` is deprecated as of dplyr 0.7.0.
## Please use `arrange()` instead.
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## Warning: 'histogram' objects don't have these attributes: 'mode'
## Valid attributes include:
## 'type', 'visible', 'showlegend', 'legendgroup', 'opacity', 'name', 'uid', 'ids', 'customdata', 'meta', 'selectedpoints', 'hoverinfo', 'hoverlabel', 'stream', 'transforms', 'uirevision', 'x', 'y', 'text', 'hovertext', 'orientation', 'histfunc', 'histnorm', 'cumulative', 'nbinsx', 'xbins', 'nbinsy', 'ybins', 'autobinx', 'autobiny', 'bingroup', 'hovertemplate', 'marker', 'offsetgroup', 'alignmentgroup', 'selected', 'unselected', '_deprecated', 'error_x', 'error_y', 'xcalendar', 'ycalendar', 'xaxis', 'yaxis', 'idssrc', 'customdatasrc', 'metasrc', 'hoverinfosrc', 'xsrc', 'ysrc', 'textsrc', 'hovertextsrc', 'hovertemplatesrc', 'key', 'set', 'frame', 'transforms', '_isNestedKey', '_isSimpleKey', '_isGraticule', '_bbox'

## Warning: 'histogram' objects don't have these attributes: 'mode'
## Valid attributes include:
## 'type', 'visible', 'showlegend', 'legendgroup', 'opacity', 'name', 'uid', 'ids', 'customdata', 'meta', 'selectedpoints', 'hoverinfo', 'hoverlabel', 'stream', 'transforms', 'uirevision', 'x', 'y', 'text', 'hovertext', 'orientation', 'histfunc', 'histnorm', 'cumulative', 'nbinsx', 'xbins', 'nbinsy', 'ybins', 'autobinx', 'autobiny', 'bingroup', 'hovertemplate', 'marker', 'offsetgroup', 'alignmentgroup', 'selected', 'unselected', '_deprecated', 'error_x', 'error_y', 'xcalendar', 'ycalendar', 'xaxis', 'yaxis', 'idssrc', 'customdatasrc', 'metasrc', 'hoverinfosrc', 'xsrc', 'ysrc', 'textsrc', 'hovertextsrc', 'hovertemplatesrc', 'key', 'set', 'frame', 'transforms', '_isNestedKey', '_isSimpleKey', '_isGraticule', '_bbox'

## Warning: 'histogram' objects don't have these attributes: 'mode'
## Valid attributes include:
## 'type', 'visible', 'showlegend', 'legendgroup', 'opacity', 'name', 'uid', 'ids', 'customdata', 'meta', 'selectedpoints', 'hoverinfo', 'hoverlabel', 'stream', 'transforms', 'uirevision', 'x', 'y', 'text', 'hovertext', 'orientation', 'histfunc', 'histnorm', 'cumulative', 'nbinsx', 'xbins', 'nbinsy', 'ybins', 'autobinx', 'autobiny', 'bingroup', 'hovertemplate', 'marker', 'offsetgroup', 'alignmentgroup', 'selected', 'unselected', '_deprecated', 'error_x', 'error_y', 'xcalendar', 'ycalendar', 'xaxis', 'yaxis', 'idssrc', 'customdatasrc', 'metasrc', 'hoverinfosrc', 'xsrc', 'ysrc', 'textsrc', 'hovertextsrc', 'hovertemplatesrc', 'key', 'set', 'frame', 'transforms', '_isNestedKey', '_isSimpleKey', '_isGraticule', '_bbox'