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Chapter 2: Q.11 (page 127)

Use the data from the David County science competition supplied in Exercise 2.10. Construct a bar graph that shows the county-wide population percentage of students at each school.

Short Answer

Expert verified

The bar graph he county-wide population percentage of students at each school. is as follow:

Step by step solution

01

Content Introduction

A bar graph may be described as a chart or a graphical illustration of data, portions or numbers the usage of bars or strips. Bar graphs are used to examine and assessment numbers, frequencies or different measures of awesome classes of data.

02

Content Explanation

The steps to follow to make a bar graph in Excel is as follow:

  1. Select the data and go to Insert option.
  2. Now under Charts, select bar chart option
  3. Click on the plus sign at right hand side of the bar graph, and mention the Axis, Chart titles, etc.

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Most popular questions from this chapter

a. For runners in a race, a low time means a faster run. The winners in a race have the shortest running times. Is it more desirable to have a finish time with a high or a low percentile when running a race?

b. The 20th percentile of run times in a particular race is 5.2 minutes. Write a sentence interpreting the 20th percentile in the context of the situation.

c. A bicyclist in the90th percentile of a bicycle race completed the race in 1 hour and 12 minutes. Is he among the fastest or slowest cyclists in the race? Write a sentence interpreting the 90th percentile in the context of the situation.

The University of California has two criteria used to set admission standards for freshmen to be admitted to a college in the UC system:

a. Students' GPAs and scores on standardized tests (SATs and ACTs) are entered into a formula that calculates an "admissions index" score. The admissions index score is used to set eligibility standards intended to meet the goal of admitting the top 12%of high school students in the state. In this context, what percentile does the top 12%represent?

b. Students whoseGPAs are at or above the 96th percentile of all students at their high school are eligible (called eligible in the local context), even if they are not in the top 12%of all students in the state. What percentage of students from each high school are "eligible in the local context"?

Describe the shape of this distribution.

Given the following box plot:

Figure 2.41

a. which quarter has the smallest spread of data? What is that spread?

b. which quarter has the largest spread of data? What is that spread?

c. find the interquartile range (IQR).

d. are there more data in the interval 5鈥�10 or in the interval 10鈥�13? How do you know this?

e. which interval has the fewest data in it? How do you know this?

i. 0鈥�2

ii. 2鈥�4

iii. 10鈥�12

iv. 12鈥�13

v. need more information

Table 2.76 gives the percent of children under five considered to be underweight.

What is the best estimate for the mean percentage of underweight children? What is the standard deviation? Which interval(s) could be considered unusual? Explain.
See all solutions

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