Assignment #1 1.1 Define the terms population, sample, parameter, and statistic,

Question

Assignment #1 1.1 Define the terms population, sample, parameter, and statistic, and explain how these terms are related to each other (describe in your own words). 1.2 Define in your own words the concept of sampling error. Be sure that your definition includes the concepts of statistic and parameter 1.3 A researcher would like to evaluate the claim that large doses of vitamin C can help prevent the common cold. One group of participants is given a large dose of the vitamin (500 mg per day), and colds each individual experien variable for this study b. Is the dependent variable discrete or continuous? c measurement (nominal, ordinal, or interval ratio) is used to measure the dependent variable What is the independent variable? e. What research method is being used (experimental or correlational? a second group is given a placebo (sugar pill. The researcher records the number of ces during the 3-month winter season. a. Identify the dependent . What scale of 1.4 For the following set of scores (9. 1, 1, 1), find the value of each expression a OX2 b (OX)2 c, D(X-3) d. X-3)2 Make a table to show your calculations for each expression above, as I show you to do on the Tips and Hints class video and handout. Assume the data below is a sample group of 4 persons. Each person's score is listed below 9111

Explanation / Answer

1.1

Population: A population (universe) is the collection of all members of a group.

Sample: A sample is a portion of the population selected for analysis.

Parameter: A parameter is a numerical measure that describes a characteristic of a population.

Statistic: A statistic is a numerical measure that describes a characteristic of a sample.

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