RPubs - Ryan Tillis - Data Science - R Programming - Quiz 1 - Coursera

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The IF serve as allows you to make a logical comparability between a value and what you are expecting by way of testing for a situation and returning a result if that condition is True or False.

But what if you wish to have to check a couple of conditions, the place let's say all prerequisites wish to be True or False (AND), or just one situation must be True or False (OR), or if you need to check if a situation does NOT meet your criteria? All three purposes can be utilized on their own, however it's a lot more common to look them paired with IF purposes.

Use the IF function along with AND, OR and NOT to perform multiple critiques if stipulations are True or False.

Syntax

IF(AND()) - IF(AND(logical1, [logical2], ...), value_if_true, [value_if_false]))

IF(OR()) - IF(OR(logical1, [logical2], ...), value_if_true, [value_if_false]))

IF(NOT()) - IF(NOT(logical1), value_if_true, [value_if_false]))

Argument title

Description

logical_test (required)

The situation you want to check.

value_if_true (required)

The value that you wish to have returned if the end result of logical_test is TRUE.

value_if_false (not obligatory)

The value that you want returned if the consequence of logical_test is FALSE.

Here are overviews of the best way to construction AND, OR and NOT functions in my view. When you combine each one of them with an IF statement, they learn like this:

AND – =IF(AND(Something is True, Something else is True), Value if True, Value if False)

OR – =IF(OR(Something is True, Something else is True), Value if True, Value if False)

NOT – =IF(NOT(Something is True), Value if True, Value if False)

Examples

Following are examples of some not unusual nested IF(AND()), IF(OR()) and IF(NOT()) statements. The AND and OR functions can beef up up to 255 particular person prerequisites, but it surely's not good practice to use more than a few as a result of advanced, nested formulas can get very tricky to build, test and maintain. The NOT function simplest takes one situation.

Here are the formulation spelled out in line with their good judgment:

Formula

Description

=IF(AND(A2>0,B2<100),TRUE, FALSE)

IF A2 (25) is more than 0, AND B2 (75) is less than 100, then go back TRUE, otherwise go back FALSE. In this situation each stipulations are true, so TRUE is returned.

=IF(AND(A3="Red",B3="Green"),TRUE,FALSE)

If A3 ("Blue") = "Red", AND B3 ("Green") equals "Green" then go back TRUE, another way return FALSE. In this case best the first situation is true, so FALSE is returned.

=IF(OR(A4>0,B4<50),TRUE, FALSE)

IF A4 (25) is more than 0, OR B4 (75) is less than 50, then return TRUE, another way go back FALSE. In this situation, most effective the first situation is TRUE, however since OR most effective calls for one argument to be true the formulation returns TRUE.

=IF(OR(A5="Red",B5="Green"),TRUE,FALSE)

IF A5 ("Blue") equals "Red", OR B5 ("Green") equals "Green" then return TRUE, another way go back FALSE. In this case, the 2nd argument is True, so the components returns TRUE.

=IF(NOT(A6>50),TRUE,FALSE)

IF A6 (25) is NOT greater than 50, then go back TRUE, another way return FALSE. In this situation 25 is not greater than 50, so the method returns TRUE.

=IF(NOT(A7="Red"),TRUE,FALSE)

IF A7 ("Blue") is NOT equivalent to "Red", then return TRUE, otherwise go back FALSE.

Note that each one of the examples have a remaining parenthesis after their respective conditions are entered. The ultimate True/False arguments are then left as section of the outer IF statement. You can also exchange Text or Numeric values for the TRUE/FALSE values to be returned in the examples.

Here are some examples of the usage of AND, OR and NOT to judge dates.

Here are the formulation spelled out in step with their good judgment:

Formula

Description

=IF(A2>B2,TRUE,FALSE)

IF A2 is greater than B2, return TRUE, in a different way go back FALSE. 03/12/14 is more than 01/01/14, so the formulation returns TRUE.

=IF(AND(A3>B2,A3<C2),TRUE,FALSE)

IF A3 is more than B2 AND A3 is less than C2, go back TRUE, another way go back FALSE. In this case both arguments are true, so the method returns TRUE.

=IF(OR(A4>B2,A4<B2+60),TRUE,FALSE)

IF A4 is greater than B2 OR A4 is lower than B2 + 60, return TRUE, differently go back FALSE. In this situation the first argument is true, however the 2nd is false. Since OR most effective needs one of the arguments to be true, the method returns TRUE. If you utilize the Evaluate Formula Wizard from the Formula tab you'll see how Excel evaluates the formulation.

=IF(NOT(A5>B2),TRUE,FALSE)

IF A5 is no longer more than B2, then return TRUE, otherwise return FALSE. In this example, A5 is greater than B2, so the formula returns FALSE.

Using AND, OR and NOT with Conditional Formatting

You too can use AND, OR and NOT to set Conditional Formatting standards with the system choice. When you do that you'll be able to forget the IF serve as and use AND, OR and NOT on their own.

From the Home tab, click on Conditional Formatting > New Rule. Next, select the "Use a formulation to resolve which cells to layout" possibility, input your system and observe the format of your choice.

Edit Rule conversation showing the Formula way" xmlns:antixss="urn:AntiXSSExtensions">

Using the previous Dates instance, right here is what the formulation would be.

Formula

Description

=A2>B2

If A2 is greater than B2, format the mobile, otherwise do not anything.

=AND(A3>B2,A3<C2)

If A3 is more than B2 AND A3 is lower than C2, layout the mobile, differently do not anything.

=OR(A4>B2,A4<B2+60)

If A4 is greater than B2 OR A4 is lower than B2 plus 60 (days), then layout the mobile, in a different way do nothing.

=NOT(A5>B2)

If A5 is NOT greater than B2, structure the mobile, differently do nothing. In this case A5 is greater than B2, so the end result will go back FALSE. If you have been to modify the components to =NOT(B2>A5) it will go back TRUE and the cell can be formatted.

Note: A commonplace error is to go into your method into Conditional Formatting with out the equals sign (=). If you do this you'll see that the Conditional Formatting dialog will add the equals sign and quotes to the system - ="OR(A4>B2,A4<B2+60)", so you'll need to remove the quotes earlier than the formulation will respond correctly.

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