How to calculate interquartile range IQR | Data and statistics | 6th grade | Khan Academy


Learn how to calculate the interquartile range, which is a measure of the spread of data in a data set.

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Grade 6th on Khan Academy: By the 6th grade, you’re becoming a sophisticated mathemagician. You’ll be able to add, subtract, multiply, and divide any non-negative numbers (including decimals and fractions) that any grumpy ogre throws at you. Mind-blowing ideas like exponents (you saw these briefly in the 5th grade), ratios, percents, negative numbers, and variable expressions will start being in your comfort zone. Most importantly, the algebraic side of mathematics is a whole new kind of fun! And if that is not enough, we are going to continue with our understanding of ideas like the coordinate plane (from 5th grade) and area while beginning to derive meaning from data! (Content was selected for this grade level based on a typical curriculum in the United States.)

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  1. Respect the drip Karen !!! 27 June, 2020 at 07:56 Reply

    Can someone help me with this question cause i don’t think I’m doing it correctly ( 100 mice in a lab were weighed their mean weight was 53,5g and the inter-quartile range was 7 g. Estimate roughly how many of the mice weighed more than 52 g, explaining your reasoning clearly) I mean you don’t have to help if you don’t want to🥺

  2. HajiraTanvir7 HajiraTanvir8 27 June, 2020 at 07:56 Reply

    what we would say to median …. can we say it quartile Q2 as well …. coz lower & upper quartiles are Q1 & Q3 respectively … isn't it ? if I'm not wrong.

  3. Lili Islas 27 June, 2020 at 07:56 Reply

    It’s currently 3am and I have a test tomorrow, I couldn’t sleep so I decided to review this, and oh I am so glad this video exists 😂 thank u so much btw.

  4. Tannerz21 Gaming 27 June, 2020 at 07:56 Reply

    If the median of all the numbers is the same, do you have to include those numbers back into the first and second sets of numbers?

  5. Sheep Cake YT 27 June, 2020 at 07:56 Reply

    Thank you so much! My teacher couldn’t explain this well at all and I didn’t get it but now I do.

  6. YANXI (CICI) CHEN 27 June, 2020 at 07:56 Reply

    It says right there 6th grade but why is my teacher making me do this when im in 5th grade ;-;

  7. The Magic Potato 27 June, 2020 at 07:56 Reply

    he sounds like he should be reading some reddit comments instead of teaching math, his voice just fits it… kinda like damien

  8. Amelie Germain 27 June, 2020 at 07:56 Reply

    i get it but im still kind of confused as to why we still need to know (in the second question) that the average of the two middle numbers is 10. its not technically needed for the IQR so is it just an extra step?

  9. Christopher Casarez 27 June, 2020 at 07:56 Reply

    If i have an odd set like 5 numbers do i just add and then subtract each number on every side

  10. Deandra 27 June, 2020 at 07:56 Reply

    I hate how he did an odd set of numbers, it’ll be more efficient if it wasn’t even so we can see how he got the median then

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