Olga Kondratenko

Black Hat

• Title generalize for the entire year when on practice it is only about March
• Y axis start point is 294 that hides context and leads to the conclusion that highest prrices vary a lot
• Colors put additional misleading pressure on the difference between values
• Y axis name doesn't provide currency inforrmation

White Hat

• Title corrected accordiing to data
• Y axis start point changed to 0 and now we have a context where we can see that the differance between values is not that big
• Colors misled to conclusions and were removed
• Y axis name extended with currency sign

Black Hat

• Used data is misleading as prices are shown only for the last two month: March to April
• Title is misleading as those are not the highest prices for theis year
• Y axis name positioned far away
• X axis name is redundand and not informative: from the ticks and from the chart's name clear that it is about months of 2022
• Y axis name doesn't provide currency inforrmation
• Tooltip doesn't work
• Grid is absent which makes data less clear togather with the not working tooltip

White Hat

• Used data represents 2022 from the beginning
• Title corrected accordiing to the used data
• Y axis name positioning fixed
• Y axis name extended with currency sign
• X axis name removed
• Tooltip fixed
• Horizontal grid lines added to provide more clarity to values over time
• Data points added to improve user experience
• Width changed to better represent used data