import pandas as pd

tips = pd.read_csv("./data/tips.csv")
tips["bill_per_person"] = tips["total_bill"] / tips["size"]
tips["percent_tip"] = (tips["tip"] / tips["total_bill"])*100
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[1], line 1
----> 1 tips["bill_per_person"] = tips["total_bill"] / tips["size"]
      2 tips["percent_tip"] = (tips["tip"] / tips["total_bill"])*100

NameError: name 'tips' is not defined
import seaborn as sns

sns.relplot(
    data=tips,
    x="bill_per_person",
    y="percent_tip",
    hue="day",
    style="day",
).set(
    xlabel="Bill per person (£)",
    ylabel="Tip percent",
)
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[2], line 4
      1 import seaborn as sns
      3 sns.relplot(
----> 4     data=tips,
      5     x="bill_per_person",
      6     y="percent_tip",
      7     hue="day",
      8     style="day",
      9 ).set(
     10     xlabel="Bill per person (£)",
     11     ylabel="Tip percent",
     12 )

NameError: name 'tips' is not defined