The median number of portions of vegetables is 3.
To determine the median number of portions of vegetables from the bar chart, we first observe the distribution of responses. The data points on the bar chart represent the number of people who reported consuming a specific number of portions of vegetables yesterday. In this case, the data points are 1, 2, 3, 4, 5, and 6 portions.
To find the median, we look for the middle value in the dataset. Since there are six categories, the median falls between the third and fourth categories. The categories "3 portions" and "4 portions" are the central ones.
As the number of portions of vegetables is discrete, we can take the average of the values in these two categories to determine the median. Thus, the median number of portions of vegetables that the people surveyed ate yesterday is 3. This means that half of the surveyed individuals ate three or fewer portions, while the other half ate three or more portions.