Math Problem Statement

How many plants had heights of less than 65 centimeters?

Solution

The graph shown in the image represents the heights of 40 plants in a garden, with each bar indicating a range of plant heights. The question asks for how many plants had heights of less than 65 centimeters.

To answer this, we need to count the plants within the height ranges that are less than 65 cm.

Looking at the graph:

  • The first bar represents heights from 0 to 20 cm.
  • The second bar represents heights from 20 to 40 cm.
  • The third bar represents heights from 40 to 60 cm.
  • The fourth bar represents heights from 60 to 80 cm, which we will ignore since we're interested only in plants under 65 cm.

Now, adding up the plants in the first three bars:

  • The first bar has 2 plants.
  • The second bar has 6 plants.
  • The third bar has 9 plants.

Thus, the total number of plants with heights under 65 cm is: 2 + 6 + 9 = 17 plants.

So, 17 plants had heights of less than 65 centimeters.

Would you like further details on interpreting this data or have other questions?

Here are some related questions for exploration:

  1. How do you interpret histograms like this one for data analysis?
  2. What can be the effect of including more data points in such graphs?
  3. How can you calculate the average height of the plants represented in the graph?
  4. How would you estimate the number of plants over 65 cm using this graph?
  5. What are other ways to represent this data visually besides histograms?

Tip: When reading histograms, always ensure to check the axis labels and range of values to correctly interpret the data.