Stats: Descriptives and Normal Distribution
18 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary assumption of the Central Limit Theorem?

  • The sample size is less than 30
  • The population's distribution is normally distributed
  • The data is nominal
  • The sampling distribution of the sample mean is approximately normally distributed (correct)

    • What descriptive statistics are used for ordinal data?

  • Median and range (correct)
  • Mode and range
  • Mean and range
  • Median and standard deviation

    • What is the purpose of descriptive statistics in simple experimental designs?

  • To summarise the data from each sample (correct)
  • To test the significance of the results
  • To compare the two groups
  • To calculate the correlation coefficient

    • What is illustrated by a scattergram and regression line?

    <p>The correlation between two variables</p> Signup and view all the answers

    What is the level of measurement required for using mean and standard deviation?

    <p>Interval and ratio</p> Signup and view all the answers

    What is the purpose of testing the assumption of normality?

    <p>To ensure the use of certain statistical tests</p> Signup and view all the answers

    What is the main application of the Central Limit Theorem in psychological research?

    <p>Inferential statistics in diverse populations</p> Signup and view all the answers

    What is the primary purpose of descriptive statistics in research?

    <p>To summarise and describe data</p> Signup and view all the answers

    What is the primary distinction between descriptive and inferential statistics?

    <p>Descriptive statistics summarises data, while inferential statistics makes inferences</p> Signup and view all the answers

    What is the purpose of testing the assumption of normality in statistical analysis?

    <p>To ensure the validity of parametric tests</p> Signup and view all the answers

    What is the primary role of hypothesis testing in psychological research?

    <p>To advance scientific knowledge and validate findings</p> Signup and view all the answers

    What is the primary advantage of using random sampling methods in research?

    <p>To increase the generalisability of the findings</p> Signup and view all the answers

    What is a primary objective of performing tests for normality?

    <p>To validate the use of parametric statistical methods</p> Signup and view all the answers

    What is the primary difference between descriptive and inferential statistics?

    <p>Descriptive statistics summarizes data, while inferential statistics makes conclusions about a population</p> Signup and view all the answers

    What is the purpose of a paired t-test?

    <p>To compare the means of two related groups</p> Signup and view all the answers

    What is a requirement for using parametric inferential tests of difference?

    <p>The data must be normally distributed</p> Signup and view all the answers

    What is the purpose of a Wilcoxon signed rank test?

    <p>To compare the means of two related groups without assuming normality</p> Signup and view all the answers

    What is the primary advantage of using inferential statistics?

    <p>It enables us to make conclusions about a population based on a sample</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser