# Sampling Methods, Frequency Distribution, Stem & Leaf Plot

Not what you're looking for?

See attached file graphs.

1. Given the situation described, identify the type of sampling involved. At a newspaper office, staffers are classified by the department in which they work. Then random samples from each department are taken.

a. random sampling

b. systematic sampling

c. convenience sampling

d. stratified sampling

e. cluster sampling

3. Given the histogram below, create a grouped frequency distribution

5. The number of surfer's special burritos served was sampled during a lunch period 11:00 a.m. 2:30 p.m. at a taco shop on a weekday. Below is the sample:

41 63 39 56 46 55 38 66 41 48

60 57 48 31 71 56 60 39 52

Construct a stem and leaf plot of the data.

6. Below are the home states of 21 college professors.

New Jersey Ohio Michigan South Carolina Nebraska

South Carolina Ohio South Carolina Pennsylvania Michigan

Georgia New Jersey Wisconsin Georgia Ohio

Florida Georgia New Jersey South Carolina Wisconsin

Pennsylvania

i. Make a frequency table using these 9 states:

Florida

Georgia

Michigan

Nebraska

New Jersey

Ohio

Pennsylvania

South Carolina

Wisconsin

ii. What is (are) the mode(s)?

iii. Does it make sense to talk about the average for this data? Why or why not?

iv. Using your frequency table draw a pie chart to display the distribution of home states by filling in the following table:

Home State Frequency Percentage of total Measure of Central Angle (in degrees)

Florida

Georgia

Michigan

Nebraska

New Jersey

Ohio

Pennsylvania

South Carolina

Wisconsin

Given the diagram below, find P upside down U Q. Write in correct set notation.

##### Purchase this Solution

##### Solution Summary

The solution provides sampling methods, frequency distribution, stem and lead plot and frequency tables.

##### Purchase this Solution

##### Free BrainMass Quizzes

##### Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.