Log in saul312 6 years agoPosted 6 years ago. Direct link to saul312's post “How do you find the MAD” How do you find the MAD • (23 votes) Muhammad Amaanullah 6 years agoPosted 6 years ago. Direct link to Muhammad Amaanullah's post “Step 1: Calculate the mea...” Step 1: Calculate the mean. (56 votes) Nick 4 years agoPosted 4 years ago. Direct link to Nick's post “how do you find the media...” how do you find the median,mode,mean,and range please help me on this somebody i'm doom if i don't get this • (11 votes) Maya B 4 years agoPosted 4 years ago. Direct link to Maya B's post “The median is the middle ...” The median is the middle number in the data set. (23 votes) hon 6 years agoPosted 6 years ago. Direct link to hon's post “How do you find the mean ...” How do you find the mean from the box-plot itself? • (12 votes) Maya B 4 years agoPosted 4 years ago. Direct link to Maya B's post “You cannot find the mean ...” You cannot find the mean from the box plot itself. The information that you get from the box plot is the five number summary, which is the minimum, first quartile, median, third quartile, and maximum. (15 votes) Jiye 6 years agoPosted 6 years ago. Direct link to Jiye's post “If the median is a number...” If the median is a number from the actual dataset then do you include that number when looking for Q1 and Q3 or do you exclude it and then find the median of the left and right numbers in the set? • (4 votes) Jem O'Toole 5 years agoPosted 5 years ago. Direct link to Jem O'Toole's post “If the median is a number...” If the median is a number from the data set, it gets excluded when you calculate the Q1 and Q3. If the median is not a number from the data set and is instead the average of the two middle numbers, the lower middle number is used for the Q1 and the upper middle number is used for the Q3. :) (9 votes) Khoa Doan 6 years agoPosted 6 years ago. Direct link to Khoa Doan's post “How should I draw the box...” How should I draw the box plot? Is there a certain way to draw it? • (2 votes) Anthony Liu 6 years agoPosted 6 years ago. Direct link to Anthony Liu's post “This video from Khan Acad...” This video from Khan Academy might be helpful. https://www.khanacademy.org/math/statistics-probability/summarizing-quantitative-data/box-whisker-plots/v/constructing-a-box-and-whisker-plot (5 votes) Yanelie12 6 years agoPosted 6 years ago. Direct link to Yanelie12's post “How do you fund the mean ...” How do you fund the mean for numbers with a %. • (5 votes) bonnie koo 3 years agoPosted 3 years ago. Direct link to bonnie koo's post “just change the percent t...” just change the percent to a ratio, that should work (0 votes) Ozzie 3 years agoPosted 3 years ago. Direct link to Ozzie's post “Hey, I had a question. So...” Hey, I had a question. So, when you have the box plot but didn't sort out the data, how do you set up the proportion to find the percentage (not percentile). For example, take this question: "What percent of the students in class 2 scored between a 65 and an 85?" • (2 votes) OJBear 3 years agoPosted 3 years ago. Direct link to OJBear's post “Ok so I'll try to explain...” Ok so I'll try to explain it without a diagram The space between the lowest value and quartile 1 is 25% or 1/4. Quartile 1 to the median is another 25% making it 50% so far. The median to the 3rd quartile is another 25% and the 3rd quartile to the highest value if obviously 25% more. So that's 100%. If 65 is the lowest value and 85 is between the lowest value and quartile 1, then 25% of the students in class scored between 65 and 85. If 65 and 85 go through the lowest value to quartile 1 and to the median then that would be 50%. I hope this helps? I would need the diagram to explain it better though. I think the Interpreting Quartiles section of the article will explain it better with the visual. Note: If you ever come across a question with the mean of a box plot, just say there is none. It's impossible to calculate the mean since we don't have all the data; only parts of it. You can estimate the mean, but not calculate it exactly. Again, hopes this helps :-) (2 votes) Yanni RoseC 4 years agoPosted 4 years ago. Direct link to Yanni RoseC's post “How do you find the best ...” How do you find the best estimate for the mean at least? • (2 votes) WEW012 4 years agoPosted 4 years ago. Direct link to WEW012's post “um. I dont think you real...” um. I dont think you really have to estimate. you just add all the values of something together, then divide by the number of numbers there are. (1 vote) raghadg3 a year agoPosted a year ago. Direct link to raghadg3's post “Box-and-whisker plot.Shor...” Box-and-whisker plot.Short description, Box-and-whisker plot.,Long description, The whiskers go from 2 to 53. The box goes from 11.5 to 38.5, with a line at 19. Question • (2 votes) LydiaD 3 years agoPosted 3 years ago. Direct link to LydiaD's post “how do you get the quarti...” how do you get the quartiles • (2 votes) green_ninja 3 years agoPosted 3 years ago. Direct link to green_ninja's post “Let's say you have this s...” Let's say you have this set of numbers: The median for this set of numbers is 8. To find the quartiles (Q1 and Q3) take the sets to the left and right of 8, which are as follows: [1, 2, 6] and [12, 18, 21] and find their medians. Q1 = 2 In the case where a set has an even amount of numbers, like this one: Split the set in half to find the quartiles: [1, 2, 6] and [8, 12, 18]. Q1 = 2 Hope this cleared things up!😄 (1 vote)Want to join the conversation?
Step 2: Calculate how far away each data point is from the mean using positive distances. These are called absolute deviations.
Step 3: Add those deviations together.
Step 4: Divide the sum by the number of data points.
The mode is the number that shows up the most in the data set.
The mean is the average number of the data set (to find it, you have to add up all of the numbers (sum) and then divide it by how many numbers there are).
The range is the number when you subtract the highest number and the lowest number.
Ex. The highest number in the data set is 10. The lowest number in the data set is 5. To find the range, you would do 10-5, so the range of the data set is 5.
A box-and-whisker plot is entitled Ages of the First 21 Shoppers to Walk into a Department Store. The number line goes from 0 to 60 in increments of 5.
What is the median age shown on the box-and-whisker plot?
1, 2, 6, 8, 12, 18, 21
Q3 = 18
1, 2, 6, 8, 12, 18
Q3 = 12
Box plot review (article) | Khan Academy (2024)
References
- https://www.khanacademy.org/math/statistics-probability/summarizing-quantitative-data/box-whisker-plots/a/box-plot-review
- https://www.mashupmath.com/blog/box-and-whisker-plots-explained
- https://byjus.com/maths/box-and-whisker-plot/
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