01 The sections of a pie chart do not add up to the complete circle. What does this indicate?
Answer and explanation
Correct answer: C. There is an error in the data or proportions
Explanation: A pie chart represents one complete whole, so all its sectors together must account for 100% of the data, or 360° of the circle. If the sectors leave part of the circle incomplete, the percentages, angles, or source data have probably been calculated or transferred incorrectly. Therefore, option C is correct. Title size, attractive colours, and suitable image size do not determine whether the sectors form a complete circle.