
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system

The scores of 10 students were checked via two tests: $A$ and $B$. The scores on a 100-point scale are as follows (the first row indicates the scores for test $A$, and the second row indicates the scores for test $B$):

| 95 | 90 | 86 | 84 | 75 | 70 | 62 | 60 | 57 | 50 |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 92 | 93 | 83 | 80 | 55 | 60 | 45 | 72 | 62 | 70 |

Find the Kendall’s rank correlation coefficient between the scores of the two tests.

Present the answer in LaTex format: \boxed{Your answer}
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