Thursday, July 19, 2018

Spreadsheets2: Analyze Data

Aggregation Functions
= A1 + B1 + C1
= SUM(A1:C1)

SUM/ AVERAGE/ MAX/ MIN/ MEDIAN/ STANDARD DEVIATION(stdev)

Logical Functions
=IF(condition, value if TRUE, [value if FALSE])
=IF(AND(condition1, condition2, ...), value if TRUE, [value if FALSE])

Otherwise, mark it with "No".
AND: true if all conditions are true
OR: true if any condition is true
NOT: reverses true and false

ex)
=IF(OR(MAX(B2:D2)>10, SUM(B2:D2)>20), "Special Order", "No")
If the maximum number of any one fruit exceeds 10 pieces in an order, 
or the total order exceeds 20 pieces (all fruit),
then mark it with "Special Order".
Otherwise, mark it with "No".

Conditional Aggregation Functions
COUNTIF
=countif(A:A, "=apple")
SUMIF

Named Ranges
Creating named ranges is a lot more readable and easier to maintain.
How to create named ranges:
Formulas> Define Name





Vlookup: a function that uses a keyword and index to "look up" a value in a table
=VLOOKUP(A2,airline_lookup, 2, FALSE)
1) selecting a cell
2) selecting the range you are referring to -> here I used named ranges
3) Index of the column you are referring to
4) False -> exact match
True -> similar match

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