Reading a Stem and Leaf Plot to find Mode, Mean and Median

Q. While determining median of a data set from stem and leaf plot, the numbers in the leaf column are arranged in ascending order by -

1. considering all the numbers at a time, i.e., with inter-row arrangement.
2. considering the number within each row, i.e., intra-row arrangements only.

Q. Which measure of central tendency we can measure from Stem Leaf representation of data?

1. Only Mode
2. Only Mean
3. Only Median
4. Mean, Mode, Median

Q. The number of muffins sold in a school carnival by $10$ students is given in this ordered stem and leaf plot. What are the median and mode of this data set?

Stem	Leaf
2	3, 5, 5, 7, 8
3	2, 6, 6
4	5
5	0

1. Median $=30$, Mode $=25$
2. Median $=30$, Mode $=36$
3. Median $=30$, Mode $=25and36$

Q. Find the mode(s) of the following data set. Stem Leaf

$1$ $2$ $4$	$9,0,1,9$ $0,0,3$ $1,5,6$

$\text{Key}:1|1$ means $11$

1. 9
2. 0
3. 19
4. 20

Q. Heights (cm) of various herbs in a garden are depicted in the following plot:
Stem Leaf

$0$ $1$ $2$	$8,9,7,7$ $0,5,0$ $1,5,0$

$\text{Key}:1|6\text{means}16$
The mean height of the herbs is cm.

Q. This ordered stem and leaf plot shows the number of votes received by $12$ students running for student body president.

Stem	Leaf
2	0, 2, 2, 8
3	2
4	2, 3, 4, 5
5	1, 4
9	8

Identify the outlier in the data set.

1. $45$
2. $54$
3. $98$

Q. Choose the numbers that are present in the following data set: Stem Leaf

0 1 2 3	1, 7 5, 6, 7, 9 3, 5 0

1. 61
2. 16
3. 07
4. 71

Q. This ordered stem and leaf plot shows the number of votes received by $12$ students running for student body president.

Stem	Leaf
2	0, 2, 2, 8
3	2
4	2, 3, 4, 5
5	1, 4
9	8

Find the median number of votes collected.

1. $42$
2. $43$
3. $42.5$

Q. This ordered stem and leaf plot shows the number of votes received by $12$ students running for student body president. How many students received more than $45$ votes?

Stem	Leaf
2	0, 2, 2, 8
3	2
4	2, 3, 4, 5
5	1, 4
9	8

1. $3$ students
2. $2$ students
3. $4$ students

Q. Heights (cm) of various herbs in a garden are depicted in the following plot:
Stem Leaf

$0$ $1$ $2$	$9,0,1,9$ $6,3,6$ $1,5,0$

$\text{Key}:1|6$ means $16$
Determine the median height of the herbs.

1. 13 cm
2. 16 cm
3. (a) and (b) above.
4. 14.5 cm