Dot Plots 03:12 minutes

Video Transcript

Transcript Dot Plots

After hearing stories from her grandmother of a magical place, Elz the Elf Girl searched far and wide and finally, she's found the storied wonderland! Legend says that whoever proclaims the 'magic' word while standing in this exact spot will be granted the strength to lift 5,000 times their own weight.

Decipher a dot plot

Since the colums aren't labeled Elz doesn't know where to begin to look for the magic word. Luckily, Elz can use a key given to her by her grandma, as a tool to decipher a dot plot. To find the correct letter in each column of a dot plot, she must first count the number of objects in this list: boulders, torches, statues, skulls, willow trees, and the number of steps.

Drawing a dot plot

Elz counts. She has 8 boulders, 4 torches, 3 statues, 5 skulls, 1 willow tree, and the stairs have just 3 steps. Elz jots down the totals into a frequency table, but she needs to present the data in a dot plot. How to do this? Let’s help her out. To draw the dot plot, first, we draw a horizontal line and label it with the different items you would like to count. You can use words, pictures, or numbers when appropriate. Now, add dots to indicate the frequency of each item. It’s optional to draw a vertical line labeled with numbers to identify the frequency, and it may even make the dot plot easier to interpret. Notice how the data jumps out at you? Okay, Elz is good to go.

Completing a dot plot

You're probably wondering how she can use Grandma’s key to discover the magic word. Well, there's another way to complete a dot plot. If we put a dot only at the point of the greatest absolute value for each column. Take a look what happens when she uses the key. Elz discovers the magic word, ‘B’ ‘E’ ‘M’ ‘I’ ‘N’ ‘I'. Bemini? Hmm, maybe ’be mini’? Something is happening! Will Elz be able to lift 5,000 times her own weight?

Ah, now I get it, ‘be mini!‘ I hope this isn't permanent.