Flashcards
ITRIP Tim
Flashcards do conjunto (37)
- 1Inferential StatisticsDrawing conclusions about a population from a sample
- Null Hypothesis Significance Testing
- Confidence Intervals - 2Sample M (or x̅)Population µ (mu)
- 3Sample SDPopulation S, σ (lower case sigma)
- 4Standard Normal Distribution (SND)Results from transforming raw scores to standardised (Z) scores, the SND is a normal distribution transformed so that it has an M of 0 and a SD of 1
- 5Z scoresZ=(X-M)/SD
The mean (M) subtracted from the raw score (X) and dividing by the distributions standard deviation (SD) - 6Central Limit TheoremIf we take many samples of the same size from a population, calculate the mean for each sample, and draw a histogram of these sample means, the histogram of these sample means will always show a normal distribution
- 7Standard Error of the MeanSEM = σ/√n
n refers to the number of participants - 8StatisticsA branch of mathematics concerned with organising, analysing, and interpreting groups of numbers
- 9Descriptive StatisticsSummarising and describing a group of numbers
- 10HistogramA graph of the frequency table that shows the shape of the distribution. The height of each bar is the frequency of each value in the frequency table
- 11Between Groups t-testCompare the variation between the group means with the variation of the individuals within the groups
- 12Frequency TableA table displaying the pattern of frequencies over different values
- 13Shape of a Frequency Distribution SymmetricalThe pattern of frequencies on the left and right side of the middle are mirror images
- 14Shape of a Frequency Distribution Skewed to the RightAlso called positively skewed, the tail points to the higher values
- 15Shape of a Frequency Distribution Skewed to the LeftAlso called negatively skewed, the tail points to the lower values
- 16ModeThe most common single value in a distribution, the value with the largest frequency
- 17MedianThe middle score when all of the scores are lined up from lowest to highest
- 18MeanThe average of the whole group of scores, sum of the scores divided by the number of scores
- 19RangeDifference between minimum and maximum scores
- 20VarianceThe average of the squared deviations from the mean
SD^2 =[ ∑(X-M)^2]/N - 21Standard Deviation (SD)The average amount the scores differ from the mean
(SD)= √SD^2 - 22HypothesisA prediction based on observations or theory, to be tested in a research study
- 23Hypothesis TestingA systematic procedure for deciding whether the results obtained with a study sample support a hypothesis that applies to the population
- 24Research HypothesisA statement about the predicted relationship between populations
- 25Null HypothesisA statement about a relationship that is the opposite of the research hypothesis
- 26SED (Square root of the variance in the population of mean differences)SED= √(SEM1)^2+(SEM2)^2
- 27t-statistict=(X1-X2)/SED
- 28Degrees of Freedomdf=(N1-1)+(N2-1)
Total sample size minus 2 - 29Two-tailed TestThere will be a difference between the two groups
- 30One-tailed TestOne group will score higher than the other
- 31Structured InterviewsLike an oral questionnaire. Set of standard questions asked to all interviewees
- 32Semi-structured InterviewsQuestions set around a theme, more flexible. Tree like structure
- 33Unstructured InterviewsConversations with a natural flow, sometimes used in clinical and therapeutic sessions, and eliciting life histories or biographical information
- 34In-depth InterviewsIn some ways similar to unstructured interviews, but more heavily influenced by theory
- 35Codingo Interview a participant
o Transcribe the interview and extract meaning
categories
o Interview a second participant
o Transcribe and extract more categories
o Repeat, stopping only when new interviews stop
generating new meaning categories - 36EthnographyField work, studies of longer duration, include interviews and observation
- 37Mixed MethodsUsing both quantitative and qualitative methods to answer the question
Informações
- Descrição
- Mainly focuses on statistics and qualitative and quantitative data
- Criado por
- Steph M
- Visualizações
- 11
- Avaliação