


Using three-dimensional effects in pie charts can distort the perceived size of categories. Students must learn to compare two-dimensional areas accurately to understand the true distribution of data. Proper graph design ensures that the visual weight matches the numerical value presented.
A survey with a biased or too small sample size leads to unreliable conclusions in statistics. Secondary 1 curricula emphasize the importance of selecting participants randomly to avoid skewed results. Understanding this concept prevents students from accepting generalizations based on insufficient evidence.
Graphs may use uneven intervals on the axes to hide or highlight specific data fluctuations. Consistent scaling is essential for maintaining accuracy and fairness in data presentation. Students should always check the axis labels to ensure the intervals are uniform throughout the chart.