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<speak> If the output variable is only a single value, <break strength="weak"/>and if it is not varying.<break strength="strong"/> It is not useful to predict. <break strength="strong"/>If the chance of admit is 0.5 in every row, <break strength="weak"/>then it is difficult to predict. <break strength="strong"/>Data should have some variations. <break strength="strong"/>The ideal condition is data should have a normal distribution.<break strength="strong"/> In our case,<break strength="weak"/> the chance of admitting has enough variation.<break strength="strong"/> The output is varying enough,<break strength="weak"/> and you can use this data for building the model. <break strength="x-strong"/> Similarly, <break strength="weak"/>the university rating has 5 values. <break strength="strong"/>In the first bin, <break strength="weak"/>you see the university ranking 30.<break strength="strong"/>  We have enough values for each quantity. <break strength="strong"/> For the first one and the second one, we have enough values.<break strength="strong"/> If any bin has less frequency, then it is not useful.<break strength="strong"/> It becomes unbalanced data. <break strength="strong"/>So our predictions will be hampered by this unbalanced data.<break strength="strong"/> For every entry, <break strength="weak"/>we should have enough values so that we can model accurately.<break strength="strong"/> Maximum students are getting between 3 to 3.5 ratings from this analysis. <break strength="strong"/>If you see the value research, it has a value 0 or 1. <break strength="strong"/> In the research column, <break strength="weak"/>a total of 497 student data is present. <break strength="strong"/> The value_counts() function gives a Series containing counts of unique values.<break strength="strong"/> You see here, <break strength="weak"/>280 students are having one in the research variable.<break strength="strong"/> That means 280 students have the research experience. <break strength="strong"/>Whereas 217 students do not have the research experience, <break strength="weak"/>that’s why it is zero. <break strength="strong"/> </speak>