LibreOffice-Calc-on-BOSS-Linux/C3/Formulas-and-Functions/English-timed

Time	Narration
00:00	Welcome to the Spoken Tutorial on Formulas and Functions in LibreOffice Calc.
00:07	In this tutorial we will learn about: Conditional Operator If..Or statement Basic statistic functions Rounding off numbers
00:19	Here we are using GNU/Linux as our operating system and LibreOffice Suite version 3.3.4.
00:30	We have already learnt to apply the basic arithmetic operators like addition,subtraction and average on data.
00:39	Now, let’s learn about a few other useful operators.
00:43	One of the most commonly used operator is the Conditional Operator.
00:51	Conditional Operators, check for the condition applied on the data by the user
00:56	and then show results in boolean - TRUE or FALSE.
01:01	Let’s open “Personal-Finance-Tracker.ods”.
01:05	Here, under the heading “Cost”, we have listed the prices of several items.
01:11	Let’s apply conditional operators on them and analyse the results.
01:17	Let’s click on the cell referenced as “B10” and type “Condition Result” inside it.
01:24	Now, click on the cell referenced as “C10”.
01:28	The condition’s result will be applied and displayed in this cell.
01:33	Note, that the cost of “House Rent” is rupees 6,000.
01:38	The cost for the “Electricity Bill” is rupees 800.
01:43	The cost of “House Rent” is more than that of “Electricity Bill”.
01:48	We can apply different conditions on them and check the results.
01:54	Click on the cell referenced as “C10”.
01:57	In this cell, type the first condition as “is equal to C3 greater than C4 ” and press the “Enter” key.
02:09	Since the value in cell C3 is greater than the value in cell C4, the result we get is “TRUE”.
02:18	Now let us change this conditional statement to “is equal to C3 less than C4”
02:26	Press “Enter”.
02:28	The result we get is “FALSE”.
02:32	In the same manner, you can apply other conditional statements and study the results.
02:38	These statements are very useful when dealing with large amounts of data.
02:44	You can also use the “If and Or” condition on data
02:49	* to print the results according to the condition that holds TRUE.
02:55	Let’s click on the cell referenced as “C10” and type,
02:59	“ is equal to IF” and within braces, “C3 greater than C4” comma, within double quotes “Positive” comma and again within double quotes “Negative”.
03:16	This means if the value in cell C3 is greater than the value in cell C4, “Positive” will be displayed
03:25	or else “Negative” will be displayed..
03:28	Now press “Enter”.
03:31	Notice, that the result is “Positive” since rupees 6000 is greater than rupees 800.
03:39	Now, in the condition statement let’s change “greater than” to “less than” and press the “Enter” key.
03:47	Note, that the result is now “Negative”, as the value in cell C3 is greater than the value in cell C4.
03:57	You can also see the change in result, if we change the data in the cells C3 and C4.
04:04	The result which is displayed now is “Negative”.
04:09	Now, let us increase the value in cell C4 to “7000” and press the “Enter” key.
04:17	The result automatically changes to “Positive”.
04:22	Again, let’s decrease the value in cell C4 to “800”.
04:26	And press the “Enter” key.
04:29	The result again automatically changes to “Negative”.
04:34	Now, let us delete the changes made.
04:38	Next, let’s learn a few arithmetic and statistic functions.
04:43	Basic arithmetic functions include SUM for addition, PRODUCT for multiplication, QUOTIENT for division and many more which we have already learnt in the earlier tutorials.
04:57	Now let’s perform some operations to check how the Sum, Product and the Quotient functions work.
05:05	First let’s select “Sheet 3”.
05:08	Enter the numbers “50”,”100” and ”150” within the cells referenced “B1”, “B2” and “B3” respectively.
05:19	Click on the cell “A4” and type “SUM”.
05:23	Click on the cell “B4”.
05:26	We shall compute the result in this cell.
05:30	Type “is equal to “SUM”, and within the braces, B1 comma B2 comma B3.
05:37	Press Enter.
05:39	Notice the result shows “300”.
05:43	You can also enter a range of cells like this
05:47	Click on “B4” again.
05:49	Now, within the braces, instead of B1 comma B2 comma B3, type B1 colon B3
05:58	Press Enter.
06:00	Once again, the result shows “300”
06:03	Now let’s click on the cell “A5” and type “PRODUCT”.
06:08	Click on the cell “B5”.
06:10	Here type “is equal to “PRODUCT”, and within the braces, B1 colon B3.
06:18	Press Enter.
06:20	Notice the result shows “7,50,000”.
06:26	Now let’s see how Quotient works.
06:29	Click on the cell referenced “A6” and type “QUOTIENT”.
06:34	Now click on the cell “B6”.
06:37	We shall use this cell to compute the result.
06:40	And type “is equal to QUOTIENT”, and within the braces, B2 comma B1.
06:47	Press Enter.
06:49	You will get the result as “2”. That is because “100” divided by “50” gives 2.
06:59	Similarly, we can perform various arithmetic operations in Calc.
07:05	Now, let’s learn how to implement Statistic Functions.
07:09	Statistical functions are useful for analysis of data in spreadsheets. For example, functions like COUNT, MIN, MAX, MEDIAN, MODE and many more are statistical in nature.
07:27	First, let us click on sheet 1.
07:30	Let’s see how to find the minimum, the maximum and the median costs, using statistical functions.
07:37	Let’s click on the cell referenced as “C10” where we will be displaying the result.
07:44	Under the heading “Cost”, we have very few entries.
07:48	The minimum cost is rupees 300.
07:51	The maximum cost is rupees 6000.
07:55	These are the results which should be displayed when we use their functions.
08:00	In the cell “C10” let’s type “is equal to MAX” and within braces “C3” colon “C7”.
08:10	Now press the “Enter” key.
08:13	Notice, that the result is “6000”, which is the maximum value in the column.
08:20	Now, let’s replace the term “MAX” in the statement with “MIN”.
08:25	And press the “Enter” key.
08:28	Note, that the result is “300” which is the minimum amount in the Cost column.
08:34	To find the median value, replace the term “MIN” with “MEDIAN”.
08:40	And press the “Enter” key.
08:43	The result shows “800”, which is the median cost in the column.
08:50	Similarly, you can use other statistical functions on data and analyze them accordingly.
08:58	Let us delete the changes in this cell.
09:02	Now, let’s learn how to round off numbers.
09:05	Let us make few changes under the heading, “Cost”.
09:09	We shall change: “6000” to “6000.34” “600” to “600.4” ”300” to “300.3”.
09:23	Now, click on the cell referenced as “B11” and type the heading “ROUNDING OFF”.
09:31	Click on the cell referenced as “C11” where we will find the total of the items under the heading “Cost”.
09:39	In the cell C11 let’s type “is equal to SUM” and within braces “C3” colon “C7”.
09:49	Now, press the Enter key.
09:53	Notice, that the total is “9701.04”.
09:59	Now suppose we don’t want any decimal places in our result.
10:04	The best solution is to round off the result to the nearest whole number.
10:09	Let us click on the cell with the total “9701.04”.
10:15	Type “is equal to ROUND”,open brace “SUM” and again within braces “C3” colon “C7”.
10:25	Close the brace. Press the Enter key.
10:29	You see, that the result is now “9701”, which is “9701.04” rounded of to the nearest whole number.
10:44	Rounding off, can also be done to either the lower whole number or the higher number.
10:52	Let’s click on the cell with the result and edit the term “ROUND” to “ROUNDUP”.
10:59	Now, press the “Enter” key.
11:02	You see that the result is now “9702” which is the higher whole number.
11:10	In order to round off to the lower whole number, change the term “ROUNDUP” to “ROUNDDOWN”
11:17	And press the “Enter” key.
11:19	The result is now “9701” which is the lower whole number.
11:28	Let us undo these changes in order to get our “Personal-Finance-Tracker.ods” to its original form.
11:37	This brings us to the end of this Spoken Tutorial on LibreOffice Calc.
11:43	To summarize, we learned about: Conditional Operator If..Or statement Basic statistic functions Rounding off numbers
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Contributors and Content Editors

PoojaMoolya, Sandhya.np14