What is an Lmplot() in Seaborn ? With Example

It is a combination of Scatter Plot and Regression Line.
A regression line is simply a single line that best fits the data (in terms of having the smallest overall distance from the line to the points)

Let’s Start Exploratory Data Analysis on Flights Dataset using Seaborn Library of Python Pandas

import seaborn as sns

flights = sns.load_dataset('flights')

flights

	year	month	passengers
0	1949	January	112
1	1949	February	118
2	1949	March	132
3	1949	April	129
4	1949	May	121
5	1949	June	135
6	1949	July	148
7	1949	August	148
8	1949	September	136
9	1949	October	119
10	1949	November	104
11	1949	December	118
12	1950	January	115
13	1950	February	126
14	1950	March	141
15	1950	April	135
16	1950	May	125
17	1950	June	149
18	1950	July	170
19	1950	August	170
20	1950	September	158
21	1950	October	133
22	1950	November	114
23	1950	December	140
24	1951	January	145
25	1951	February	150
26	1951	March	178
27	1951	April	163
28	1951	May	172
29	1951	June	178
…	…	…	…
114	1958	July	491
115	1958	August	505
116	1958	September	404
117	1958	October	359
118	1958	November	310
119	1958	December	337
120	1959	January	360
121	1959	February	342
122	1959	March	406
123	1959	April	396
124	1959	May	420
125	1959	June	472
126	1959	July	548
127	1959	August	559
128	1959	September	463
129	1959	October	407
130	1959	November	362
131	1959	December	405
132	1960	January	417
133	1960	February	391
134	1960	March	419
135	1960	April	461
136	1960	May	472
137	1960	June	535
138	1960	July	622
139	1960	August	606
140	1960	September	508
141	1960	October	461
142	1960	November	390
143	1960	December	432

144 rows × 3 columns

sns.lmplot(x='year', y='passengers', data=flights)

<seaborn.axisgrid.FacetGrid at 0x14ef204f208>

sns.lmplot(x='year', y='passengers', data=flights, hue='month')

<seaborn.axisgrid.FacetGrid at 0x14ef3306cc0>

sns.lmplot(x='year', y='passengers', data=flights, hue='month', palette='Set2', fit_reg=False)

<seaborn.axisgrid.FacetGrid at 0x14ef49d8470>

# Selecting Data for June Only

june = flights[(flights['month']=='June') | (flights['month']=='July') ]

sns.lmplot(x='year', y='passengers', data=june, hue='month', palette='Set2', fit_reg=True)

<seaborn.axisgrid.FacetGrid at 0x14ef4c8e898>