Question 1

For the following stated limits:________.________.23-30, 31-38, 39-46 what are the real limits?

Accepted Answer

A)  22-31, 31-38, 38-45 
B)  23-29, 29-38, 38-46 
C)  23.0-29.9, 30.0-37.9, 38.0-46.9 
D)  22.5-30.5, 30.5-38.5, 38.5-46.5 
A)  22-31, 31-38, 38-45 
B)  23-29, 29-38, 38-46 
C)  23.0-29.9, 30.0-37.9, 38.0-46.9 
D)  22.5-30.5, 30.5-38.5, 38.5-46.5

Question 2

To calculate a proportion, the number of cases in any category (f) is divided by________.

Accepted Answer

A)  the total number of categories (k). 
B)  the number of cases in all categories (N). 
C)  the cases in that category (f). 
D)  the number of cases in adjacent categories (k-1). 
A)  the total number of categories (k). 
B)  the number of cases in all categories (N). 
C)  the cases in that category (f). 
D)  the number of cases in adjacent categories (k-1).

Question 3

The graphical presentation method that uses midpoints rather than real limits is a________.

Accepted Answer

A)  pie chart. 
B)  line chart. 
C)  histogram. 
D)  bar chart. 
A)  pie chart. 
B)  line chart. 
C)  histogram. 
D)  bar chart.

Question 4

Histograms and line charts or frequency polygons are used with data measured at the________.

Accepted Answer

A)  nominal level. 
B)  ordinal level. 
C)  interval-ratio level. 
D)  any level. 
A)  nominal level. 
B)  ordinal level. 
C)  interval-ratio level. 
D)  any level.

Question 5

You are the Dean of students at a college and the President has asked for some information about how the student body has changed over the years. You have collected the following information regarding the number of students in various categories for two different graduating classes: 
   What will you say to the president when she asks: 
a. What percentage of the graduating class was female in 1990?________ 2010?
b. What percentage of the glass was going to graduate school in 2010? ______ Has this percentage gone up or down since 1990 and by how much? (Hint: Compute the percentage change to measure the amount of change between the two times)
c. What proportion of the graduating class attended the commencement ceremony in 2010?______ Has this proportion gone up or down since 1990 and by how much? 
d. What proportion of the class majored in the humanities in 1990? ________ 2010?
e. What percent of students received financial aid in 1990? ________ 2010?
f. Relatively speaking, how many students finished in just four years in 1990? _______ 2010? How has this percentage changed between the two years?
g. What proportion of students were married in 1990? ________ 2010? 
h. Write a paragraph describing the changes in the graduating classes of 1990 and 2010. 
What changes seem especially important? Why?

Accepted Answer

The answer of You are the Dean of students at...

Question 6

When constructing a frequency distribution, the number of class intervals, in general, should be________.

Accepted Answer

A)  more than 20. 
B)  about 10. 
C)  only 2. 
D)  the same as the number of cases. 
A)  more than 20. 
B)  about 10. 
C)  only 2. 
D)  the same as the number of cases.

Question 7

The purpose of univariate descriptive statistics is to________.

Accepted Answer

A)  summarize relationships between many variables. 
B)  display the essential meaning of variables measured at the interval-ratio level. 
C)  combine nominal and discrete variables. 
D)  summarize a single variable. 
A)  summarize relationships between many variables. 
B)  display the essential meaning of variables measured at the interval-ratio level. 
C)  combine nominal and discrete variables. 
D)  summarize a single variable.

Question 8

The crude birth rate of a city that has 250 births in a year and a population of 7500 would be found by using which of the following?

Accepted Answer

A)  crude birth rate = (250/7500) x 1000 
B)  crude birth rate = 7500/250 
C)  crude birth rate = (1000/7500) x 250 
D)  crude birth rate = (250/1000) x 7500 
A)  crude birth rate = (250/7500) x 1000 
B)  crude birth rate = 7500/250 
C)  crude birth rate = (1000/7500) x 250 
D)  crude birth rate = (250/1000) x 7500

Question 9

On January 1, 2013, a police department implemented tougher patrols for drunk driving. The number of drunk driving fatalities in the jurisdiction was 32 in 2012, and 23 in 2013. By what percentage did the new patrols reduce fatalities?

Accepted Answer

A)  25% 
B)  28% 
C)  39% 
D)  42% 
A)  25% 
B)  28% 
C)  39% 
D)  42%

For the following stated limits:..23-30, 31-38, 39-46 what are the real limits?

To calculate a proportion, the number of cases in any category (f) is divided by________.

The graphical presentation method that uses midpoints rather than real limits is a________.

Histograms and line charts or frequency polygons are used with data measured at the________.

When constructing a frequency distribution, the number of class intervals, in general, should be________.

The purpose of univariate descriptive statistics is to________.

The crude birth rate of a city that has 250 births in a year and a population of 7500 would be found by using which of the following?

On January 1, 2013, a police department implemented tougher patrols for drunk driving. The number of drunk driving fatalities in the jurisdiction was 32 in 2012, and 23 in 2013. By what percentage did the new patrols reduce fatalities?

Introduction

Measures of Central Tendency

Measures of Variation

The Normal Curve

Introduction to Inferential Statistics Sampling and the Sampling Distribution

Estimation Procedures

Hypothesis Testing I the One Sample Case

Hypothesis Testing Ii the Two Sample Case

Hypothesis Testing Iii the Analysis of Variance

Hypothesis Testing Iv Chi Square

Bivariate Association for Nominal and Ordinal Level Variables

Association Between Variables Measured at the Interval Ratio Level

Elaborating Bivariate Tables

Partial Correlation and Multiple Regression and Correlation

Filters

Exam 2: Basic Descriptive Statistics Tables Percentages Rates and Ratios and Graphs

For the following stated limits:________.________.23-30, 31-38, 39-46 what are the real limits?

To calculate a proportion, the number of cases in any category (f) is divided by________.

The graphical presentation method that uses midpoints rather than real limits is a________.

Histograms and line charts or frequency polygons are used with data measured at the________.

When constructing a frequency distribution, the number of class intervals, in general, should be________.

The purpose of univariate descriptive statistics is to________.

The crude birth rate of a city that has 250 births in a year and a population of 7500 would be found by using which of the following?

On January 1, 2013, a police department implemented tougher patrols for drunk driving. The number of drunk driving fatalities in the jurisdiction was 32 in 2012, and 23 in 2013. By what percentage did the new patrols reduce fatalities?

Introduction

Measures of Central Tendency

Measures of Variation

The Normal Curve

Introduction to Inferential Statistics Sampling and the Sampling Distribution

Estimation Procedures

Hypothesis Testing I the One Sample Case

Hypothesis Testing Ii the Two Sample Case

Hypothesis Testing Iii the Analysis of Variance

Hypothesis Testing Iv Chi Square

Bivariate Association for Nominal and Ordinal Level Variables

Association Between Variables Measured at the Interval Ratio Level

Elaborating Bivariate Tables

Partial Correlation and Multiple Regression and Correlation

Filters

For the following stated limits:..23-30, 31-38, 39-46 what are the real limits?