Question

Which stem-and-leaf plot represents this data? 80, 81, 91, 92, 66, 55, 54, 30, 55, 79, 78 A stem-and-leaf plot with a stem value of 3 with a leaf value of 0, a stem value of 4, a stem value of 5 with a leaf value of 0, a stem value of 6 with a leaf value of 0, a stem value of 7 with a leaf value of 0, a stem value of 8 with a leaf value of 0, and a stem value of 9 with a leaf value of 0. Key: 5|0 means 50 A stem-and-leaf plot with a stem value of 3 with a leaf value of 0, a stem value of 4, a stem value of 5 with a leaf value of 4, 5, a stem value of 6 with a leaf value of 6, a stem value of 7 with a leaf value of 8, 9, a stem value of 8 with a leaf value of 0, 1, and a stem value of 9 with a leaf value of 1, 2. Key: 5|4 means 54 A stem-and-leaf plot with a stem value of 3 with a leaf value of 0, a stem value of 4, a stem value of 5 with a leaf value of 4, 5, 5, a stem value of 6 with a leaf value of 6, a stem value of 7 with a leaf value of 8, 9, a stem value of 8 with a leaf value of 0, 1, and a stem value of 9 with a leaf value of 1, 2. Key: 5|4 means 54 A stem-and-leaf plot with a stem value of 3 with a leaf value of 1, a stem value of 4, a stem value of 5 with a leaf value of 4, 5, 5, 6, a stem value of 6 with a leaf value of 6, a stem value of 7 with a leaf value of 6, 8, a stem value of 8 with a leaf value of 1, 7, and a stem value of 9 with a leaf value of 1. Key: 5|4 means 54

Answer 1

You are solving for a stem-and-leaf plot that represents the given data: 80, 81, 91, 92, 66, 55, 54, 30, 55, 79, 78.

Note that a stem-and-leaf plot is used in this way:

For example: 8|7

In this case, the stem is the tens place value, and is signified by 8. 7, on the other hand, is the ones place value. Multiple leafs can share the same stem. For example, a stem-and-leaf plot of 85, 86, 87, would give you 8|5 , 6 , 7.

Now, set the given data set in order:

30 , 54 , 55 ,  55 , 66 , 78 , 79 , 80 , 81 , 91 , 92

Now, create the stem-and-leaf plot:

Stem | Leaf

$\left[\begin{array}{c|ccc}3&0\\5&4&5&5\\6&6\\7&8&9\\8&0&1\\9&1&2\end{array}\right]$

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Your answer will be:

A stem value of 3, with a leaf value of 0. A stem value of 5, with a leaf value of 4 & 5. A stem value of 6, and a leaf value of 6. A stem value of 7, and a leaf value of 8 & 9. A stem value of 8, and a leaf value of 0 & 1. A stem value of 9, and a leaf value of 1 & 2.

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