spread

• Model
• Chart

Standard Deviation and Variance

Source Code: [link]

openbb.qa.spread(data: pd.DataFrame, window: int = 14)

---

Parameters

Name	Type	Description	Default	Optional
data	pd.DataFrame	DataFrame of targeted data	None	False
window	int	Length of window	14	True

---

Returns

Type	Description
Tuple[pd.DataFrame, pd.DataFrame]	Dataframe of rolling standard deviation, Dataframe of rolling variance

---

Plots rolling spread

Source Code: [link]

openbb.qa.spread_chart(data: pd.DataFrame, target: str, symbol: str = "", window: int = 14, export: str = "", external_axes: Optional[List[matplotlib.axes._axes.Axes]] = None)

---

Parameters

Name	Type	Description	Default	Optional
data	pd.DataFrame	Dataframe	None	False
target	str	Column in data to look at	None	False
target	str	Column in data to look at	None	False
symbol	str	Stock ticker		True
window	int	Length of window	14	True
export	str	Format to export data		True
external_axes	Optional[List[plt.Axes]]	External axes (3 axes are expected in the list), by default None	None	True

---

Returns

This function does not return anything

---