Question

2. Below is the stem-plot of an exam score: Stem-and-leaf of First Exam N = 31

Stem Leaves

5 | 58

6 | 058

7 | 00235558

8 | 0001355557

9 | 00023338

Unit=1

a. 2pts. Find the median and mode

b. 1pt. Find the range of the data values.

Answer #1

Stem & leaf pa

5 | 5 8

6 | 0 5 8

7 | 0 0 2 3 5 5 5 8

8 | 0 0 0 1 3 5 5 5 5 7

9| 0 0 0 2 3 3 3 8

Data is

55, 58, 60 , 65 , 68 , 70 , 70 ,72 , 73 , 75 , 75 , 75 , 78 , 80
, 80 , **80** , 81 , 83 , **85 , 85 , 85,
85,**87 , 90 ,90 , 90 ,92 ,93,93,93,98

N= 31

1) Median :-

Median =( n+1 / 2) th observation = (31+1) / 2 = 32/2 = 16

16th observation is median.

16 th observation is 80.

Median = 80

2) Mode:-

The mode is the most occurred observation.

The mode occurred observation in the data is 85 which occurs 4 times

Mode = 85

b)

range = maximum - minimum

= 98 - 55

= 43

Range = 43

for the stem-leaf system illustrated in the below diagram.
Find Maximum and minimum values and the Range.
For the stem -leaf diagram shown on the previous question find
the mean, mode, and the median:
stems (ones)- leaves (tenths)
2 2,4,5,8
3 0,1,3
4 6,7
5 3,5,5

The following stem-and-leaf plot represents a sample of exam
scores.
Exam Scores
4 | 5 6 8
5 | 3 4 5 6 9
6 | 2 3 5 6 6 9 9
7 | 0 1 1 3 3 4 5 5 5 7 8
8 | 1 2 3 6 9
9 | 3 5 7 8
The variance & coefficient of variation for the examination
scores is
QQQQ

Here is a data set summarized as a stem-and-leaf plot:
3
00024677779
4
0003445677888899
5
04456
6
669
How many data values are in this data set? n=n=
What is the minimum value in the last class?
What is the minimum value in the entire sample?
How many of the original values are greater than 40?
The test scores for two algebra classes are shown in the Stem
and Leaf below.
Test Scores
Period 9
Period 10
9 8 2...

Here is a data set summarized as a stem-and-leaf plot:
5# | 0022234569
6# | 01145555667779
7# | 01256
8# | 149
How many data values are in this data set? n=
What is the minimum value in the last class? ans =
What is the frequency of the modal class? (Hint, what is the
mode?) frequency =
How many of the original values are greater than 70? ans=

A stem-and-leaf plot is presented to answer the following
question.
+
Stem
Leaf Plot
4
4 5 9
5
0 2 3 3 4 4 6 7 7 7 8
6
1 2 2 3 4 7 8 9
7
0 1 1 2 3 4 4 5 6 6 8 9
8
0 1 3 5
Question 12
The value of 57 is represented on the stem and leaf graph, _____
times.
1) 4
2) 5
3) 3
4)...

Describe how to construct a stem-and-leaf plot from a set of
data. Assume that the data consist of two-digit numerical
values.
Choose the correct answer below.
A.
First, organize the data into several classes, such as 40-49,
50-59, and so on. Then, tally the number of data items in each
class, and determine the percentage of the population occupied by
each class. Draw a circle, and divide the circle into portions
representing the percentage for each class.
B.
The plot...

Use the stem & leaf plot to determine the median time it
takes for students to get to school? Minutes to Travel to School
Key 3|5 = 35 minutes 1 | 3 3 5 7 8 9 2 | 0 2 3 5 6 6 8 9 3 | 0 1 3
3 3 5 5 8 8 4 | 0 5 5 | 5

The stem and leaf plot shows a set of data regarding the number
of text messages sent and received per day by a group of college
students.Find the median and explain what it means in the context
of the problem. Write a detailed sentence.
0
2 6 7
1
2 2 6
2
2 4 4 5
3
1 9 9 9
4
0
5
6
1

From the following stem-and-leaf display, find the
1st quartile, the 2nd quartile (or median),
the 3rd quartile, the interquartile range, and interpret the
interquartile range result. What values will be considered
outliers?
1| 9
2| 0 1 2 2 6 9
3| 0 1 2 3 4 5 5 7 8 8 9
4| 2 6
5| 0 1 2 4 5 7 8 9
6| 5 9

The stem and leaf plot shows a set of data regarding the number
of text messages sent and received per day by a group of college
students.
0
2 6 7
1
2 2 6
2
2 4 4 5
3
1 9 9 9
4
0
5
6
1
What is the mode of the distribution?
Based on this data, how many students send and receive 39 or
more text messages per day?
a.
10
b.
5
c.
4...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 20 minutes ago

asked 32 minutes ago

asked 38 minutes ago

asked 47 minutes ago

asked 56 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago