You can use the **describe()** function to generate for variables in a pandas DataFrame.

By default, the **describe()** function calculates the following metrics for each numeric variable in a DataFrame:

- count (number of values)
- mean (mean value)
- std (standard deviation)
- min (minimum value)
- 25% (25th percentile)
- 50% (50th percentile)
- 75% (75th percentile)
- max (max value)

However you can use the following syntax to only calculate the mean and standard deviation for each numeric variable:

**df.describe().loc[['mean', 'std']]
**

The following example shows how to use this syntax in practice.

**Example: Use describe() in Pandas to Only Calculate Mean and Std**

Suppose we have the following pandas DataFrame that contains information about various basketball players:

**import pandas as pd
#create DataFrame
df = pd.DataFrame({'team': ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'],
'points': [18, 22, 19, 14, 14, 11, 20, 28],
'assists': [5, 7, 7, 9, 12, 9, 9, 4],
'rebounds': [11, 8, 10, 6, 6, 5, 9, 12]})
#view DataFrame
print(df)
team points assists rebounds
0 A 18 5 11
1 B 22 7 8
2 C 19 7 10
3 D 14 9 6
4 E 14 12 6
5 F 11 9 5
6 G 20 9 9
7 H 28 4 12
**

If we use the **describe()** function, we can calculate descriptive statistics for each numeric variable in the DataFrame:

#calculate descriptive statistics for each numeric variable df.describe() points assists rebounds count 8.000000 8.00000 8.000000 mean 18.250000 7.75000 8.375000 std 5.365232 2.54951 2.559994 min 11.000000 4.00000 5.000000 25% 14.000000 6.50000 6.000000 50% 18.500000 8.00000 8.500000 75% 20.500000 9.00000 10.250000 max 28.000000 12.00000 12.000000

However, we can use the following syntax to only calculate the and for each numeric variable:

**#only calculate mean and standard deviation of each numeric variable
df.describe().loc[['mean', 'std']]
points assists rebounds
mean 18.250000 7.75000 8.375000
std 5.365232 2.54951 2.559994
**

Notice that the output only includes the mean and standard deviation for each numeric variable.

Note that the **describe()** function still calculated each descriptive statistic as earlier but we used the **loc** function to select only the rows with the names **mean** and **std** in the output.

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