Which is the difference between a Histogram and a bar graph? for what we use each of them?, what we are compering in each one?

the difference is that a histogram is a graph with ranges and bar graph is exact.

khan academy has w rizz

Correct. I agree with that question.

Is a histogram simply a bar graph with a range quantities for each bar, or is there another reason? I also noticed that in all of the histograms the bars are connected, or touching one another. Does that have something to do with it?

In Histogram you are actually using continuous data rather than categorical data.

How do you take the variance of a Histogram? I am a little confused as to how to find the mean of multiple buckets. More specifically which numbers do you use of the range of the bucket to find the mean and subsequently the variance and standard deviation of a data set given only in histogram form?

For mean, take the midpoint(M) of every bucket and multiply it with the frequency(f). Take the sum of all these (f.M) and divide it by the sum of frequencies. So mean will be Σf.M/Σf.

What is the main difference between a Histogram and a bar graph?

I think the difference is bar graph uses signal kind of date , histogram uses group of data and group them in pens

what are the overall distinction among all graphs. how many graph methods are there actually?

No It's a histogram, Look up histograms on khan academy and click on creating histograms and it will help you understand.

are these histograms the same as bar graphs

*Histograms* are very similar to *bar graphs*, but there are some differences. *Histograms show numerical data* whereas *bar graphs show categorical data*. Also bar graphs have spacing between the bars, and histograms don't have spacing.

can we choose whether to use a histogram or bar graph or do we have to have a specific one for a specific thing?

both are used for specific purposes....like if u have 100 data to be plotted....u'll need 100 bar graphs to represent it(one for each)...However, if u use a histogram and create a 5 buckets or bins as mentioned above....each of 0-19 intervals, u'll be able to represent the same data with just 5 bars in the histogram,thus reducing your plight. :)

is a histogram the same as a bar graph

No histogram has a interval or class but bar graph is for fixed value this is a little bit difference

I am confused regarding "histogram used for continous data" at some places i have read that it is graph drawn (line joining the topmost mid section reading of all intervals)

A histogram shows the frequency of data. It has intervals at the x- axis and the frequency at the y- axis. I believe what you are suggesting might be referred to as a line graph? Histograms don't exactly show continuous data, but they definitely show frequency. Hope that helped! Happy Learning!

Main content

Histograms review

Google Classroom

Histograms

A histogram displays numerical data by grouping data into "bins" of equal width. Each bin is plotted as a bar whose height corresponds to how many data points are in that bin.

Bins are also sometimes called "intervals", "classes", or "buckets".

Reading a histogram

The heights of the bars tell us how many data points are in each bin.

For example, this histogram says that Leonard's patch has

8

pumpkins whose mass is between

6

and

9

kilograms.

Want to learn more about reading histograms? Check out this video.

Want to practice some more problems like this? Check out this exercise.

Creating a histogram

Below are the lengths (in meters) of Luiza's

8

drives from the last time that she played golf.

23, 78, 130, 147, 156, 177, 184, 213

Here's how to make a histogram of this data:

Step 1: Decide on the width of each bin. If we go from

0

250

using bins with a width of

50

, we can fit all of the data in

5

bins.

There is no strict rule on how many bins to use—we just avoid using too few or too many bins.

Step 2: Count how many data points fall in each bin.

Driving distance (in meters)	Data points	Number of drives
$0$ ‍- $49$ ‍	$23$ ‍	$1$ ‍
$50$ ‍- $99$ ‍	$78$ ‍	$1$ ‍
$100$ ‍- $149$ ‍	$130, 147$ ‍	$2$ ‍
$150$ ‍- $199$ ‍	$156, 177, 184$ ‍	$3$ ‍
$200$ ‍- $249$ ‍	$213$ ‍	$1$ ‍

Step 3: Scale the

x

-axis from

0

250

using intervals of width

50

. Label the

x

-axis "driving distance (meters)".

Step 4: Scale the

y

-axis up to

3

—or something just past it—since that will be the highest bar.

Step 5: Draw a bar for each interval so its height matches the number of drives in that interval.

Want to learn more about making histograms? Check out this video.

Want to try some problems like this? Check out this exercise.

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Mateus
Posted 7 years ago. Direct link to Mateus's post “Which is the difference b...”
Which is the difference between a Histogram and a bar graph? for what we use each of them?, what we are compering in each one?
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- s-jainman
  Posted a year ago. Direct link to s-jainman's post “the difference is that a ...”
  the difference is that a histogram is a graph with ranges and bar graph is exact.
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kelsey.driediger
Posted 7 years ago. Direct link to kelsey.driediger's post “Is a histogram simply a b...”
Is a histogram simply a bar graph with a range quantities for each bar, or is there another reason? I also noticed that in all of the histograms the bars are connected, or touching one another. Does that have something to do with it?
Button navigates to signup pageComment on kelsey.driediger's post “Is a histogram simply a b...”
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- Waseem Hussain
  Posted 7 years ago. Direct link to Waseem Hussain's post “In Histogram you are actu...”
  In Histogram you are actually using continuous data rather than categorical data.
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khan academy has w rizz
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niadirah.martin
Posted 4 years ago. Direct link to niadirah.martin's post “are these histograms the ...”
are these histograms the same as bar graphs
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- Joe H
  Posted 2 years ago. Direct link to Joe H's post “*Histograms* are very sim...”
  Histograms are very similar to bar graphs, but there are some differences. Histograms show numerical data whereas bar graphs show categorical data. Also bar graphs have spacing between the bars, and histograms don't have spacing.
  Button navigates to signup page
  (8 votes)
moreshwar gaikwad
Posted 7 years ago. Direct link to moreshwar gaikwad's post “I am confused regarding "...”
I am confused regarding "histogram used for continous data" at some places i have read that it is graph drawn (line joining the topmost mid section reading of all intervals)
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(1 vote)
Answer
- Simmy :)
  Posted 7 years ago. Direct link to Simmy :)'s post “A histogram shows the fre...”
  A histogram shows the frequency of data. It has intervals at the x- axis and the frequency at the y- axis. I believe what you are suggesting might be referred to as a line graph? Histograms don't exactly show continuous data, but they definitely show frequency. Hope that helped! Happy Learning!
  Button navigates to signup page
  (7 votes)
Michael Pell Blumenthal Martin
Posted 7 years ago. Direct link to Michael Pell Blumenthal Martin's post “How do you take the varia...”
How do you take the variance of a Histogram? I am a little confused as to how to find the mean of multiple buckets. More specifically which numbers do you use of the range of the bucket to find the mean and subsequently the variance and standard deviation of a data set given only in histogram form?
Button navigates to signup pageButton navigates to signup page
(3 votes)
Answer
- Sahil Aggarwal
  Posted 7 years ago. Direct link to Sahil Aggarwal's post “For mean, take the midpoi...”
  For mean, take the midpoint(M) of every bucket and multiply it with the frequency(f). Take the sum of all these (f.M) and divide it by the sum of frequencies. So mean will be Σf.M/Σf.
  Button navigates to signup page
  (4 votes)
vaguayo1556
Posted a year ago. Direct link to vaguayo1556's post “What is the main differen...”
What is the main difference between a Histogram and a bar graph?
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Answer
- myounis04
  Posted a year ago. Direct link to myounis04's post “I think the difference is...”
  I think the difference is bar graph uses signal kind of date , histogram uses group of data and group them in pens
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  (3 votes)
Md. Ashrafuzzaman Bhuiyan
Posted 7 years ago. Direct link to Md. Ashrafuzzaman Bhuiyan's post “what are the overall dist...”
what are the overall distinction among all graphs. how many graph methods are there actually?
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(3 votes)
Answer
- remilandry
  Posted 7 years ago. Direct link to remilandry's post “No It's a histogram, Look...”
  No It's a histogram, Look up histograms on khan academy and click on creating histograms and it will help you understand.
  Button navigates to signup page
  (2 votes)
daphne
Posted 7 years ago. Direct link to daphne's post “can we choose whether to ...”
can we choose whether to use a histogram or bar graph or do we have to have a specific one for a specific thing?
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(2 votes)
Answer
- Kshitiz Singh
  Posted 6 years ago. Direct link to Kshitiz Singh's post “both are used for specifi...”
  both are used for specific purposes....like if u have 100 data to be plotted....u'll need 100 bar graphs to represent it(one for each)...However, if u use a histogram and create a 5 buckets or bins as mentioned above....each of 0-19 intervals, u'll be able to represent the same data with just 5 bars in the histogram,thus reducing your plight. :)
  Button navigates to signup page
  (4 votes)
Emi Do
Posted a year ago. Direct link to Emi Do's post “is a histogram the same a...”
is a histogram the same as a bar graph
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Answer
- kuldeepsingh9315052132
  Posted a year ago. Direct link to kuldeepsingh9315052132's post “No histogram has a interv...”
  No histogram has a interval or class but bar graph is for fixed value this is a little bit difference
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Statistics and probability

Course: Statistics and probability > Unit 2

Histograms

Reading a histogram

Creating a histogram

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