The change of the scale is the main cause of misleading

This is one of the most common ways graphs misrepresent data,by distorting the scale.Zooming in on a small portion of the y-axis exaggerates a barely detectable difference between the things being compared.And it's especially misleading with bar graphs since we assume the difference in the size of the bars is proportional to the values.But the scale can also be distorted along the x-axis,usually in line graphs showing something changing over time.