Ask Question, Ask an Expert


Ask Statistics and Probability Expert

1. Describe, briefly, your observational study or experiment and state your hypotheses. What do you think is the correlation of the variables and why.

2. Select a well-designed sample of at least 30 units. (Describe the population to be studied and the sampling frame). Two variables should be measured with a potential for correlation; if you measure more than two variables, you must correlate two at a time. Pay particular attention for any lurking variables. If you are doing an experiment make sure there is a control group.

3.Care must be taken in the collection of the data. Avoid sampling and non-sampling errors. If working with subjects (people, that is), be careful with the wording of your problems. If you are using secondary data, don't forget to document the sources.

4.Give descriptive statistics for each single variable. At a minimum you should include the mean, median, mode, standard deviation, and five-number summary. A frequency table as well as a histogram should be included for each numerical variable.

5.Correlation analysis should include a scatterplot and the line of best fit (linear regression). Give the correlation coefficient as well as .

6.Draw your conclusions or inferences. describe the strength of the association. Be careful not to conclude more than your correlation analysis allows; that is, do not make any statements not supported by your data. How confident are you about your inferences?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M944364

Have any Question? 

Related Questions in Statistics and Probability

A random sample of 1260 adults living innbspnew york

A random sample of 1,260 adults living in New York city was asked (among other things) to name their favorite sports (to watch). Of the 670 females in the survey, 375 indicated that baseball was their favorite sport. Of ...

John is an avid fisherman and wants to know if there is a

John is an avid fisherman and wants to know if there is a correlation between the amount of time he spends fishing and the amount of fish he catches. He decided to keep track of the time he spent at the lake and the amou ...

In onenbsptownnbsp24nbspof all voters are democrats if two

In one town, 24% of all voters are Democrats. If two voters are randomly selected for a survey, find the probability that they are both Democrats. Round to the nearest thousandth if necessary.

1 should demand characteristics be eliminated or

1. Should demand characteristics be eliminated or strengthened in an experiment? Explain. 2. How do researchers detect and eliminate placebo effects? 3. What effect does error variance have on the results of an experimen ...

Assume a normal distribution for n 300 how many cases

Assume a normal distribution for N = 300. How many cases would one expect to find between +1 and -1 standard deviations around the mean? 102 285 150 204

The premise a few years have passed and your survivor group

The premise: a few years have passed, and your survivor group has grown due to the merger with another group of survivors. You still maintain the position as the intellectual of the group because you are a historian.  Al ...

The historical context of england in 1215 with the costs of

The historical context of England in 1215 with the costs of King Richard the Lionheart's ransom and the crusades. What were the nobles' complaints? How did the nobles' interests differ from the king's interest? What inte ...

1 what geographical and historical factors have led

1. What geographical and historical factors have led Singapore to develop such a particular, and highly valued, local form of the English language? 2. Why are the tiny Spratly Islands such a controversial issue in Southe ...

A philosophy professor assigns letter grades on a test

A philosophy professor assigns letter grades on a test according to the following scheme. A: Top 12% of scores B: Scores below the top 12% and above the bottom 63% C: Scores below the top 37% and above the bottom 22% D: ...

1 what is the difference between a stratum and a cluster2

1. What is the difference between a stratum and a cluster? 2. What is the drawback of obtaining random samples by telephone? 3. In what way would the use of sampling improve the accuracy of the United States census?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro