Low-margin, high-volume selling means a low gross profit margin, but Product え sits at about 30% on the horizontal axis, near the right edge of the chart, so its margin is among the high ones, not low. On the contrary, Product え has the largest bubble, meaning the highest sales, while its turnover ratio of about 9 times is on the low side, so it is a product that holds a lot of inventory. The premise itself is the opposite of what the chart shows, so this is wrong.
×Incorrectイ
Product か has the lowest inventory turnover ratio in the chart (about 7.0 times) and a gross profit margin of about 21%, which is also among the low values. By the criterion in the question, a product with both values high has good sales efficiency, so Product か is far from having the best sales efficiency — it is among the worst. The conclusion that the current state may simply be maintained does not hold either.
○ウ
正解In this bubble chart the horizontal axis is the gross profit margin on sales, the vertical axis is the inventory turnover ratio, and the size of each bubble represents the sales amount. Product く has a turnover ratio of about 15 times, the highest in the chart, and a gross profit margin of about 28%, which is also among the high values, so it fits exactly the criterion given in the question: a product with both a high gross profit margin and a high inventory turnover ratio is a good product with high sales efficiency and high profit. A high turnover ratio means the product is sold with only a small average inventory, that is, there is little excess inventory (inventory turnover ratio = sales ÷ average inventory), and since the margin is also high, profit is earned efficiently on whatever is sold. At the same time, the small bubble means the sales amount itself is not large. Therefore the analysis in ウ — sales are not high, but excess inventory is small and the margin is high, so taking measures to increase sales would efficiently increase profit — matches the chart.
×Incorrectエ
This bubble chart shows only three quantities — gross profit margin, inventory turnover ratio, and sales amount; sales quantity and unit price are not represented. A high-priced premium product with a low sales quantity, and a broad customer base, are guesses that cannot be derived from the chart. Moreover, Product こ has a large bubble, meaning its sales are among the high ones, and its turnover ratio of about 14 times is also high, so portraying it as a slow-selling product does not match the chart at all.
ここがポイント
A bubble chart shows three quantities at once: in addition to the positions on the horizontal and vertical axes, the size of the bubble represents a third quantity (here, the sales amount). Start reading such a chart by checking what each axis is and what the size means.
Inventory turnover ratio = sales ÷ average inventory. The higher the value, the more is sold with less inventory, meaning little excess inventory. A product with both a high gross profit margin and a high turnover ratio is the one with good sales efficiency, and each option must be checked using only the information drawn in the chart (an option that brings in factors not shown, such as unit price or sales quantity, is wrong).