Reading Basic Stem-and-Leaf Plots

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| By Thames
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Quizzes Created: 7116 | Total Attempts: 9,522,086
| Questions: 20 | Updated: Oct 31, 2025
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1) What does the stem represent in this plot?

Explanation

The stem shows the tens digit of each score (e.g., '6' represents 60-69).

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About This Quiz
Reading Basic Stem-and-leaf Plots - Quiz

Ready to decode stem-and-leaf plots? In this quiz, you'll practice reading and interpreting stem-and-leaf plots, which display data in a compact form. You’ll work with test scores, ages, and reading habits to extract important information like the most frequent values, ranges, and totals. By the end, you’ll be able to... see morequickly interpret and draw conclusions from stem-and-leaf plots with ease! see less

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2) How many students scored in the 80s?

Explanation

There are 4 leaves (80, 82, 84, 86) in the 80s.

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3) What is the lowest test score shown in the plot?

Explanation

The lowest score is 62, represented by the leaf '2' in the 60s.

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4) What is the highest test score shown in the plot?

Explanation

The highest score is 91, shown in the 90s with the leaf '1'.

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5) How many students scored exactly 88?

Explanation

There are two 88 scores in the 80s section.

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6) How many total test scores are represented in this plot?

Explanation

The plot has 14 data points: 3 in the 60s, 5 in the 70s, 6 in the 80s, and 2 in the 90s.

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7) Which score range has the most data points?

Explanation

The 80s range has 6 data points, more than any other range.

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8) What score appears most frequently in the 70s?

Explanation

The score 73 appears twice in the 70s section.

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9) What is the age of the oldest person at the party?

Explanation

The oldest age, 42, is shown in the 40s with the leaf '2'.

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10) How many people are younger than 20 years old?

Explanation

The people younger than 20 are aged 7, 8, 9, 12, 14, 15, and 19.

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11) What age appears twice in the data?

Explanation

Age 14 appears twice in the data (from the leaf '4' in the 10s).

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12) How many people are in their 30s?

Explanation

Two people are in their 30s (ages 35 and 36).

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13) What is the range of ages at the party? (Range = Maximum − Minimum)

Explanation

The range is 42 - 10 = 32.

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14) Which age group has the most people?

Explanation

The 10-19 age group has 5 data points (7, 8, 9, 12, 14).

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15) What does 3|6 represent?

Explanation

The '3' in the stem represents 30, and the '6' in the leaf represents 6, so the number is 36 books.

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16) How many students read fewer than 20 books?

Explanation

The scores less than 20 are 10, 12, 15, 15, so 4 students read fewer than 20 books.

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17) What is the minimum number of books read?

Explanation

The minimum is 1, shown as 1 in the stem.

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18) How many students are represented in this data set?

Explanation

There are 11 data points in total: 5 in the 10s, 4 in the 20s, 2 in the 30s.

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19) Which number of books was read by exactly two students?

Explanation

The number 15 appears twice in the leaf section for the 10s.

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20) How many students read 30 or more books?

Explanation

Three students read 30 or more books: 30, 32, and 36.

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What does the stem represent in this plot?
How many students scored in the 80s?
What is the lowest test score shown in the plot?
What is the highest test score shown in the plot?
How many students scored exactly 88?
How many total test scores are represented in this plot?
Which score range has the most data points?
What score appears most frequently in the 70s?
What is the age of the oldest person at the party?
How many people are younger than 20 years old?
What age appears twice in the data?
How many people are in their 30s?
What is the range of ages at the party? (Range = Maximum − Minimum)
Which age group has the most people?
What does 3|6 represent?
How many students read fewer than 20 books?
What is the minimum number of books read?
How many students are represented in this data set?
Which number of books was read by exactly two students?
How many students read 30 or more books?
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