A mathematics teacher wants to see, whether the new technique of teaching she applied after quarterly test was effective or not. She takes thescores of the 5 weakest children in the quarterly test (out of 25) and inthe half yearly test (out of 25):

Explanation

To determine whether the new teaching technique was effective, we will compare the scores of the 5 weakest children in the quarterly test and the half-yearly test using a bar graph. Here’s a step-by-step solution:

### Step 1: Gather the Data
First, we need to collect the scores of the 5 weakest children from both the quarterly and half-yearly tests. Let's assume the scores are as follows:

| Student | Quarterly Test Score (out of 25) | Half-Yearly Test Score (out of 25) |
|---------|----------------------------------|-------------------------------------|
| Ashish | 10 | 15 |
...