This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The data set is as follows: Ford, Ford, Chevy, Toyota, Ford, Ford, Chevy, Dodge, Dodge, Dodge, Ford, ... (Read 96 times)

Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
on: Jul 8, 2018
The data set is as follows: Ford, Ford, Chevy, Toyota, Ford, Ford, Chevy, Dodge, Dodge, Dodge, Ford, Subaru, Chevy, Toyota, Chevy. What measures of central tendency and dispersion will be used with this set?
 
  a. Difference scores
  b. Range
  c. Median
  d. Mode

Question 2

Twenty student nurses take the NCLEX examination. If the average of the twenty scores is known, how many degrees of freedom are there in the sample?
 
  a. 18
  b. 19
  c. 20
  d. 21


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

annierak

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 8, 2018
Answer to Question 1

ANS: D
The data are not inherently numerical in nature and represent only a nominal level of measurement. None of the listed measures of variability are suitable for nominal-level data. The mode is the only measure of central tendency appropriate for nominal data. The mode is the numerical value or score that occurs with the greatest frequency in a data set.

Answer to Question 2

ANS: B
The concept of degrees of freedom was used originally in reference to computing a confidence interval, but it applies to any statistical computation. Degrees of freedom are the number of independent pieces of information that are free to vary in order to estimate another piece of information. If, for instance, the mean and the total n are known, if all of the values except one are known, the last one can be calculated. However, if all except two are known, one has the freedom to vary, and the other one's value is then set. In calculations, the degrees of freedom (df) are n  1. This means that there are n  1 independent observations in the sample of n data points that are free to vary (to be any value).


Yi-Chen

  • Member
  • Posts: 550
Reply 2 on: Jul 8, 2018
Excellent

daiying98

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Engine and electric motor for the Toyota Prius Engine and electric motor for the Toyota Prius
A physician uses a portable electronic tablet to enter patient data while in the examination room. A physician uses a portable electronic tablet to enter patient data while in the examination room.
Electronic service information is available from aftermarket sources, such as All-Data and ... Electronic service information is available from aftermarket sources, such as All-Data and ...
A typical oil pressure sending unit on a Ford V-8. A typical oil pressure sending unit on a Ford V-8.
data data
Survivorship curves. Blue lines are theoretical curves. Red dots are data from field studies. Survivorship curves. Blue lines are theoretical curves. Red dots are data from field studies.
Video: Introduction to Cystic Fibrosis

For a complete list of videos, visit our video library