In the list of height of students, mode is 110 as its frequency of occurrence in the list is 3, which is larger than the frequency of rest of the values.

Question

Accepted Answer

> [!TLDR]
> The **mode** is the observation with the highest frequency — the most *typical* value actually present in the data. Height 110 cm occurs 3 times (all others occur once or twice), so the mode is **110 cm**.

## The idea

Mean and median answer "where is the centre?"; the mode answers "**which value is most common?**". Unlike the mean, the mode is always an actual observed value, and it is the only measure of central tendency that also works for non-numeric data (e.g. the most common uniform colour).

## Counting the frequencies

| Height (cm) | Frequency |
|---|---|
| 85 | 1 |
| 90 | 2 |
| 100 | 1 |
| 102 | 1 |
| **110** | **3** |
| 115 | 1 |

The highest frequency is 3, belonging to **110 cm** — that is the mode. (90 cm, with frequency 2, is the runner-up, not a mode.)

## In Python

```python
import statistics

heights = [90, 102, 110, 115, 85, 90, 100, 110, 110]
print(statistics.mode(heights))
```

```
110
```

To *see* the frequency table the way we built it by hand, `collections.Counter` is perfect:

```python
from collections import Counter
print(Counter(heights))
```

```
Counter({110: 3, 90: 2, 102: 1, 115: 1, 85: 1, 100: 1})
``` …

Q.In the list of height of students, mode is 110 as its frequency of occurrence in the list is 3, which is larger than the frequency of rest of the values.

Concept understanding — Mode

Mode: The Most Frequent Value

The Precise Definition

Examples

Why Mode Matters

The idea

Counting the frequencies

In Python

Q.In the list of height of students, mode is 110 as its frequency of occurrence in the list is 3, which is larger than the frequency of rest of the values.

The idea

Counting the frequencies

In Python

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