Devry MATH225 Week 2 Assignment Stem and Leaf plots Latest 2019 JULY Question # 00603505 Subject: Mathematics Due on: 08/08/2019 Posted On: 08/08/2019 08:33 AM Tutorials: 1 Rating: 4.6/5

MATH225 Statistical Reasoning for the Health Sciences

Week 2 Assignment Stem and Leaf plots

Question A
set of data is summarized by the stem and leaf plot below.

Stem1234Leaf000011223445899990123667788890000001345567999923335567777889

Which of
the following statements are true? Select all correct answers.

The value
18 appears 0 times in the data set.

The value
39 appears 4 times in the data set.

The value
21 appears 2 times in the data set.

The value
37 appears 0 times in the data set.

The value
42 appears 1 time in the data set.

The value
22 appears 1 time in the data set.

Question The
ages of United States’ presidents inaugurated in the 20th century are
summarized by the stem and leaf plot below.

Stem Leaf

4 236

5 111245566

6 01249

Which of
the following statements are true? Choose all answers that apply.

There are 5
presidents in the data set whose age at inauguration was greater than or equal
to 40 and less than or equal to 49.

There are 4
presidents in the data set whose age at inauguration was greater than or equal
to 30 and less than or equal to 39.

There are 9
presidents in the data set whose age at inauguration was greater than or equal
to 50 and less than or equal to 59.

There are 5
presidents in the data set whose age at inauguration was greater than or equal
to 60 and less than or equal to 69.

There are
14 presidents in the data set whose age at inauguration was greater than or
equal to 50 and less than or equal to 59.

Question Which
data set is represented by this stem-and-leaf plot?

Stem Leaf

0 245

1 556667

2 0023488

3 1123333

2,4,5,15,16,17,20,22,23,24,28,31,31,32,33

2,4,5,15,15,16,16,17,20,20,22,23,24,28,31,31,32,33,33

2,4,5,15,15,16,16,16,17,20,20,22,23,24,28,28,31,31,32,33,33,33,33

12,14,15,15,15,16,16,16,17,20,20,22,23,24,28,28,31,31,32,33,33,33,33

Stem-and-Leaf
Plots

Stem-and-Leaf
Plots

A
statistical graph is a tool that helps you see the shape of a distribution of a
sample or a population. A graph is a more effective way of presenting data
because we can see the clusters, outliers, etc.

One simple
graph is the stem-and-leaf plot. It is a good choice when the data sets are
small. To create a stem-and-leaf plot, each data value will be separated into a
“stem” and a “leaf” using its digits. The “leaf”
consists of a final significant digit. The stem contains the remaining digits
in front of the “leaf”. For example:

• The number 23 has a stem of 2 and a
leaf of 3.

• The
number 432 has a stem of 43 and a leaf of 2.

• Likewise,
the number 5432 has a stem of 543 and a leaf of 2.

When
drawing the stem-and-leaf plot, make sure the data is ordered either in
ascending or descending order. The stems are written in a vertical line from
smallest to largest. Draw a vertical line to the right of the stems. Then write
the leaves in increasing order next to their corresponding stem.

Data Set:
10,11,12,12,12,14,14,16,20,22,23,25,25,31,32,33,36,36,39

Stem-and-Leaf
Plot:

Stem Leaf

1 01222446

2 02355

3 123669

Question

A set of
data is summarized by the stem and leaf plot below.

Stem12Leaf01234778899913356777

There are
$$___ values in the data set which are greater than or equal to 20 and less than
or equal to 29. There are $$___ values in the data set which are greater than
or equal to 10 and less than or equal to 19.

Question A
set of data is summarized by the stem and leaf plot below.

Stem1234Leaf1356671123348900002367788811122334567777

There are
$$___ values in the data set which are greater than or equal to 20 and less
than or equal to 29. There are $$___ values in the data set which are greater
than or equal to 10 and less than or equal to 19. There are $$__ values in the
data set which are greater than or equal to 40 and less than or equal to 49.