Statistics Concepts

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Questions and Answers

How does increasing the sample size generally affect the width of a confidence interval, assuming all other factors remain constant?

  • Decreases the width (correct)
  • Has no effect on the width
  • Increases the width
  • The effect is unpredictable

In hypothesis testing, what does the p-value represent?

  • The probability that the alternative hypothesis is true
  • The probability that the null hypothesis is true
  • The significance level of the test
  • The probability of observing a test statistic as extreme as, or more extreme than, the one computed if the null hypothesis is true (correct)

When conducting a t-test, under what condition should you use a paired t-test rather than an independent samples t-test?

  • When the population standard deviation is known
  • When the variances of the two groups are significantly different
  • When the data from the two groups are related or matched in some way (correct)
  • When the sample sizes of the two groups are different

A researcher wants to determine if there is a relationship between hours of study and exam scores. Which statistical test is most appropriate for this scenario?

<p>Correlation analysis (A)</p> Signup and view all the answers

In the context of ANOVA, what is the purpose of post-hoc tests?

<p>To control for the overall Type I error rate when performing multiple comparisons (B)</p> Signup and view all the answers

Flashcards

What is a Radiograph?

A depiction of a person's body or part of it produced by radiation, especially X-rays, after passing through the body.

What is a Comminuted Fracture?

A fracture where the bone breaks into more than two fragments.

What is a Transverse Fracture?

A fracture where the bone is broken at a right angle to its long axis.

What is a Spiral Fracture?

A fracture where the bone is twisted apart or spiraled.

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What is a Greenstick Fracture?

A fracture occurring typically in children, in which one side of the bone is broken and the other only bent.

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Study Notes

  • Subjective data includes a client's perception of pain.
  • Open-ended questions should not be used to keep an interview from going off course.
  • Nurses should accept client's cultural differences.
  • Nurses should have knowledge of their own thoughts and feelings about sensitive issues to be therapeutic with clients.
  • Use very basic lay terminology for clients with a limited vocabulary.
  • During a client interview regarding smoking, direct encouragement to quit is a suitable course of action.
  • Nurses should use touch appropriately and in a friendly manner.
  • Nurses should provide clients with information as questions arise.
  • Nurses should maintain eye contact while asking standardized questions.
  • To interview a 78-year-old client, the nurse should establish rapport.
  • Nurses can clarify a client's statements by rephrasing the client's statements.
  • During a client interview, problems and goals are identified in the working phase of the interview.
  • Place the hand flat on the body surface, and use the fist of the other hand to perform blunt percussion.
  • The most common percussion method is indirect percussion.
  • The nurse should draw a line through an error, writing "error" and initialing.
  • Nurses should avoid slang when documenting findings and direct quotes.
  • Critical thinkers validate information and judgements.

Matching terms in the left column with the correct description in the right column.

  • A nursing diagnosis indicates the client does not currently have a problem but is at high risk for developing it.

Essential elements of critical thinking

  • Self-rate critical thinking elements to determine level, discuss improvements with peers.
  • Assess lab partners' well being.
  • Analyze data to draw conclusions, identify nursing diagnoses/collaborative problems.
  • Discuss diagnostic reasoning pitfalls and avoidance strategies.

Alcohol Harm

  • A female client with a score of 8 on the AUDIT has hazardous alcohol consumption.

Analyzing Cases

  • Analyze case study data by identifying cues, drawing inferences, constructing clusters, and documenting conclusions.
  • Propose nursing diagnoses, collaborative problems and referrals.

Normal variations

  • List some "normal variations" that may be observed in the mental status exam of different clients from various cultures.
  • Mood, feelings, expressions, and perceptions are documented as a result of the SLUMS test (Saint Louis University Mental Status).
  • Orientation to time is usually lost first, and orientation to person is usually lost last.
  • Nurses test abstract reasoning by asking clients to explain similarities and differences between objects.
  • After using the SLUMS tool, a score of 12 indicates a referral to the primary health care provider for further evaluation.
  • CAGE assessment is used to determine if further assessment is needed.

Matching

  • Freud's theory relates to the id/ego/superego.
  • Erikson's theory is generativity versus stagnation.
  • Piaget's theory concerns growth and development of intellectual structures.
  • Kohlberg viewed justice as the goal of moral judgment.
  • Sensorimotor thoughts are demonstrated by physical manipulation of objects/stimuli.

Matching descriptions may be

  • Lethargy means opening eyes, answering questions, and falling back asleep.
  • Health refers to a state of physical, mental, and social well-being.
  • Mental disorder involves underlying psychological dysfunction.

Assessing Risk

  • Role play the various levels of consciousness: lethargy, obtunded, stupor, and coma.
  • Nursing Interview Guide collect subjective data from the client.

Activities

  • Mrs. Phillips with constant cough should consider a collaborative problem, "Risk for stress".

Activities and Critical Thinking

  • Identify cue clusters and diagnostic conclusions or collaborative problems from case studies.

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