Question 1 Identify whether each of the following is either an example of or used to describe numerical data or categorical data. Blood pressure Political party Number of pets Histogram Bar Chart Symmetric, skewed left, skewed right Mode Mean Question 2 What is the average amount of sleep an undergraduate college student gets each night? A survey of 1734 UC Davis undergraduate college students were asked "how many hours of sleep did you get the night before?", and found the average to be 8.25 hours of sleep. What is the sample? What is the population? What is the variable? Question 3 The following table shows data of students on the distribution of gender and preferred lifetime achievement. Male Female Total Olympic Medal 16 4 20 Nobel Prize 3 10 13 Academy Award 9 8 17 Total 28 22 50 For the following questions, Your final percentage should have one decimal place and include a percentage sign (like 61.5%). On your scratch paper, include and label your work for this question. What percentage of students would like a Nobel Prize? What percentage of students are men who want to win an Olympic metal? What percentage of males would like an Academy Award? What percentage of females would like an Academy Award? Are males or females more likely to prefer winning an Academy Award? Explain why using complete sentences. Question 4 A study is conducted to investigate whether a new drug helps a person's allergies. 100 subjects are selected. Researchers assigned 50 subjects to take the new drug, and the other 50 subjects to take a sugar pill. All 100 subjects were asked to sniff flowers for an hour, and researchers recorded the number of times a subject sneezed. Identify the treatment variable. for answer Option A. Number of times a subject Sneezed or B. Whether or not subject took the new drug Identify the outcome variables. for answer Option A. Number of times a subject Sneezed or B. Whether or not subject took the new drug Identify the treatment group. For answer Option A. 50 Subjects to taking the new drug B. 50 subjects to taking a sugar pill Identify the control group. For answer Option A. 50 Subjects to taking the new drug B. 50 subjects to taking a sugar pill Identify the method of data collection Option A. Obeservational study or B. Controlled Expirence Study Why did you select this data collection method? Option A. The Subjects choose which pill to take or B. The Subjects were assigned which pill to take. What is the relationship between the two variables? Option A. Association or B. Causation Question 5 : The dotplot shows how many times a computer was used daily at a public library during a 30-day period. a) How many days was the number of daily logins 20 or less logins? B.The library does not want patrons to wait in a line. Usually a line develops when a computer is used 40 or more times in a day. Find what percent of days does a line develops. For part b), Your final percentage should have one decimal place and include a percentage sign (like 61.5%). On your scratch paper, include and label your work for this question

Question 1 Identify whether each of the following is either an example of or used to describe numerical data or categorical data. Blood pressure Political party Number of pets Histogram Bar Chart Symmetric, skewed left, skewed right Mode Mean Question 2 What is the average amount of sleep an undergraduate college student gets each night? A survey of 1734 UC Davis undergraduate college students were asked "how many hours of sleep did you get the night before?", and found the average to be 8.25 hours of sleep. What is the sample? What is the population? What is the variable? Question 3 The following table shows data of students on the distribution of gender and preferred lifetime achievement. Male Female Total Olympic Medal 16 4 20 Nobel Prize 3 10 13 Academy Award 9 8 17 Total 28 22 50 For the following questions, Your final percentage should have one decimal place and include a percentage sign (like 61.5%). On your scratch paper, include and label your work for this question. What percentage of students would like a Nobel Prize? What percentage of students are men who want to win an Olympic metal? What percentage of males would like an Academy Award? What percentage of females would like an Academy Award? Are males or females more likely to prefer winning an Academy Award? Explain why using complete sentences. Question 4 A study is conducted to investigate whether a new drug helps a person's allergies. 100 subjects are selected. Researchers assigned 50 subjects to take the new drug, and the other 50 subjects to take a sugar pill. All 100 subjects were asked to sniff flowers for an hour, and researchers recorded the number of times a subject sneezed. Identify the treatment variable. for answer Option A. Number of times a subject Sneezed or B. Whether or not subject took the new drug Identify the outcome variables. for answer Option A. Number of times a subject Sneezed or B. Whether or not subject took the new drug Identify the treatment group. For answer Option A. 50 Subjects to taking the new drug B. 50 subjects to taking a sugar pill Identify the control group. For answer Option A. 50 Subjects to taking the new drug B. 50 subjects to taking a sugar pill Identify the method of data collection Option A. Obeservational study or B. Controlled Expirence Study Why did you select this data collection method? Option A. The Subjects choose which pill to take or B. The Subjects were assigned which pill to take. What is the relationship between the two variables? Option A. Association or B. Causation Question 5 : The dotplot shows how many times a computer was used daily at a public library during a 30-day period. a) How many days was the number of daily logins 20 or less logins? B.The library does not want patrons to wait in a line. Usually a line develops when a computer is used 40 or more times in a day. Find what percent of days does a line develops. For part b), Your final percentage should have one decimal place and include a percentage sign (like 61.5%). On your scratch paper, include and label your work for this question

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Related questions

Question

Question 1

Identify whether each of the following is either an example of or used to describe numerical data or categorical data.

Blood pressure

Political party

Number of pets

Histogram

Bar Chart

Symmetric, skewed left, skewed right

Mode

Mean

Question 2

What is the average amount of sleep an undergraduate college student gets each night? A survey of 1734 UC Davis undergraduate college students were asked "how many hours of sleep did you get the night before?", and found the average to be 8.25 hours of sleep.

What is the sample?

What is the population?

What is the variable?

Question 3

The following table shows data of students on the distribution of gender and preferred lifetime achievement.

	Male	Female	Total
Olympic Medal	16	4	20
Nobel Prize	3	10	13
Academy Award	9	8	17
Total	28	22	50

For the following questions,

Your final percentage should have one decimal place and include a percentage sign (like 61.5%).
On your scratch paper, include and label your work for this question.
What percentage of students would like a Nobel Prize?
What percentage of students are men who want to win an Olympic metal?
What percentage of males would like an Academy Award?
What percentage of females would like an Academy Award?
Are males or females more likely to prefer winning an Academy Award? Explain why using complete sentences.
Question 4
A study is conducted to investigate whether a new drug helps a person's allergies. 100 subjects are selected. Researchers assigned 50 subjects to take the new drug, and the other 50 subjects to take a sugar pill. All 100 subjects were asked to sniff flowers for an hour, and researchers recorded the number of times a subject sneezed.
Identify the treatment variable. for answer Option A. Number of times a subject Sneezed or B. Whether or not subject took the new drug
Identify the outcome variables. for answer Option A. Number of times a subject Sneezed or B. Whether or not subject took the new drug
Identify the treatment group. For answer Option A. 50 Subjects to taking the new drug B. 50 subjects to taking a sugar pill
Identify the control group. For answer Option A. 50 Subjects to taking the new drug B. 50 subjects to taking a sugar pill
Identify the method of data collection Option A. Obeservational study or B. Controlled Expirence Study
Why did you select this data collection method? Option A. The Subjects choose which pill to take or B. The Subjects were assigned which pill to take.
What is the relationship between the two variables? Option A. Association or B. Causation
Question 5 :

The dotplot shows how many times a computer was used daily at a public library during a 30-day period.

a) How many days was the number of daily logins 20 or less logins?

B.The library does not want patrons to wait in a line. Usually a line develops when a computer is used 40 or more times in a day. Find what percent of days does a line develops.

For part b),

Your final percentage should have one decimal place and include a percentage sign (like 61.5%).
On your scratch paper, include and label your work for this question.

10 15 20 25 30 35
Number of daily logins
40
45
50

Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.

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