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[DOCX File]Assumption University
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Counting the number of the animals is as easy as applying a count function on the zoo dataframe using zoo.count(). Actually, the .count() function counts the number of values in each column. In the case of the zoo dataset, there were 3 columns, and each of them had 22 values in it.
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[DOCX File]Max Marks: 70Time: 3 hrs - Python Class Room Diary
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Write a NumPy program to find the number of elements of an array, length of one array element in bytes and total bytes consumed by the elements ... Answer the following questions. 2. a) _ method in Pandas can be used to change the label of rows and columns of a Series or Dataframe : replace() ... Rewrite the following python statement . divide ...
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[DOCX File]error handling; pandas and data analysis
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key could be a number, if column names weren’t given when setting up the data frame. Slicing. selects . rows. by number. indexing with a . list. gives multiple columns.iloc gives row/column indices (like an array)
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[DOCX File]INFORMATICS PRACTICES NEW (065) - CLASS XII - …
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Write python statement to create a one –dimensional array using arrange() function .Elements will be in the range 10 to 30 with a step of 4 (including both 10 and 30). Reshape this one-dimensional array to two dimensional array of shape(2,3).
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[DOCX File]Pandas .groupby in action - Assumption University
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In real life data projects, we usually don’t store all the data in one big data table. We store it in a few smaller ones instead. There are many reasons behind this; by using multiple data tables, it’s easier to manage your data, it’s easier to avoid redundancy, you can save some disk space, you can query the smaller tables faster, etc.
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COUNT (*) returns the number of rows in a table, including NULL values and duplicates. On the other hand COUNT (column_name) returns number of non-null values. DELETE command is used to delete rows from the table whereas DROP command is used to drop the table from the database. 3(1 mark for each correct difference) Degree=7 and Cardinality=3
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Number of rows dataframe python