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Lookup Functions
5:20In this video, we'll introduce you to lookup functions to find specific data points within a table.
You're back.
0:00
In this video, we'll introduce you to look
up functions to find specific data points
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within a table.
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First things first, make sure you have
a copy of the Google Sheets workbook found
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in the Teacher's Notes.
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Open it in a browser on your computer
to follow along with me if you wish.
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Notice the tabs along the bottom,
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these are the individual worksheets
we will use throughout the workshop.
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I'll let you know which ones
you'll need for each video.
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For this video, we'll use the first
worksheet titled Texas Rental Data.
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It contains rental data and the population
for every county in the state of Texas.
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Did you know there were
254 counties in Texas?
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Anyhow, let's imagine that you're
planning to move to Texas and
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you wanna live in a highly populated area.
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I'm a city kid so I can relate.
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On the right, starting in column J,
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I have a table with the ten
most populated Texas counties.
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We wanna find the population of each
county along with the median cost for
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two bedroom and
three bedroom rentals in each county.
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It would take too long to scroll
through this list manually, and
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there's a chance of making
mistakes by using copy and paste.
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So let's use a lookup function instead.
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There are two different types of lookups,
a VLOOKUP and an HLOOKUP.
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The V in VLOOKUP stands for vertical.
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So it'll do a search and
find in a column up and down.
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The H in HLOOKUP stands for horizontal,
or a search and find in a row,
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left and right.
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Since our data is organized in columns,
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let's use a VLOOKUP to search up and
down.
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Let's start with the population for
Harris County, home of Houston, Texas.
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In cell K2, I'll type
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=VLOOKUP(,
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click cell J2 and
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type a comma.
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Then I'll click column heading A and
drag the column H.
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Type another comma, then 2.
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Let's look at this formula
before we accept it.
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J2 has the value to search for Harris.
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A:H is the range of
cells to search through.
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The first column is used
to find out search value.
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2 is the column number within the range.
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We want the population so
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we need the value found in
the second column of the Harris row.
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There is an optional argument, but
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since our first column is sorted in
ascending order, we don't need it.
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Close parentheses and hit Enter.
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We see the population of Harris County
is over 4 million people.
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If a pop up appears to autofill
the column, click the checkmark and
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the V lookup formula is automatically
added to the rest of the column.
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If not, that's okay, I'll show you
how to autofill the columns yourself.
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In the meantime,
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let's find the median cost of
a two-bedroom apartment in Harris County.
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This time, I'll type the entire formula.
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We're still searching for
Harris in J2, and
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still searching through the same data set,
columns A through H.
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This time we need the 2 BR column
which is column 1, 2, 3, 4, 5, 6.
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In cell L2,
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type =VLOOKUP(J2,
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A:H, 6), Enter.
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$952, great.
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How about three bedroom
apartments in Harris County?
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Still searching for
Harris in the same dataset.
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3 BR is in column 7.
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So in cell M2,
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type =VLOOKUP(J2,
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A:H,7), Enter.
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$1,299.
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To fill the rest of the table,
select values K2 through M2.
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See the square in the bottom right corner,
this is the fill handle,
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we're going to hover over it until
our cursor becomes a thin plus sign.
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Then click and drag down to Fort Bend
county at the bottom of our list.
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If you did this correctly, you should
have the population and cost of two and
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three bedroom rentals for ten counties.
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I can see at a glance that there are five
counties with a population over 1 million.
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And 2-bedroom apartments are much more
expensive in Travis County than the other
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counties in our list.
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In the next video,
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we'll apply conditional formatting to
highlight data based on specific criteria.
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See you there.
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