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1. Classify the following variables as quantitative or qualitative?

(a) A study of a speed training program for high school footballers.

(b) Gender of high school footballers.

 

 

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PoksLv6
8 Mar 2021
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Related textbook solutions

Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

1. Matt the Manager wants to estimate the mean wait time for customers to check out in his Mini-Market. He randomly selects 40 customers and determines the mean wait time is 2.7 minutes. Define the following for this exercise:Experimental Unit or Individual: Is the data collected qualitative or quantitative?Variable (x):Population of Interest:Sample:Parameter of Interest:Statistic:Do you expect the parameter and the statistic to be the same value? Explain.Discuss the use of descriptive and inferential statistics in this exercise.Is the variable, x, discrete or continuous?
 
2. Identify the populationand samplefor the following examples:a)The P.E. Coach of a middle school interested in the mean height for the 7thgraders in the school. He randomly selects 40 7thgraders and measures the height of each.Population: 7thgraders Sample: 40 7thgraders chosenb)A community college notices that an increasing number of full-time students are working while attending school. The administration randomly selects 200 students and determines how may hours per week each students works.
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1. Matt, the manager, wants to estimate the mean wait time for customers to check out in his Mini-Market. He randomly selects customers and determines the mean wait time is minutes. Define the following for this exercise:

a) Is the data collected qualitative or quantitative?

b) Variable (x):

c) Population of Interest:

d) Sample:

e) Parameter of Interest and Statistic: Do you expect the parameter and the statistic to be the same value? Explain.

f) Discuss the use of descriptive and inferential statistics in this exercise.

g) Is the variable, x, discrete or continuous?

 

2. Identify the population and sample for the following examples:

The P.E. coach of a middle school interested in the mean height for the graders in the school. He randomly selects graders and measures the height of each.

a) Population:

b) 7thgraders Sample:

c) A community college notices that an increasing number of full-time students are working while attending school. The administration randomly selects 200 students and determines how many hours per week each student works.

An exercise physiologist classifies people – on the basis of their body mass index, heart rate, and lung capacity – as (a) above average in terms of fitness or (b) below average in terms of their fitness. He then directs the same people to walk on a treadmill, individually, at an increasing speed until they can no longer walk. He records the speed of the treadmill when a person maxes out on walking. He wants to know if there is a difference in the maximum walking speed for patients who have undergone knee replacement in the last ten years based on fitness level. A total of 100 people participated in the study.

  1. What is the population and sample?
  2. What are the dependent and independent variables? 
  3. What is the research hypothesis? 
  4. What are the levels of measurement for the dependent and independent variables? 

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