Quiz
Workshop 12 Q's
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Questions in this quiz (34)
1In ANOVA, F ratio is determined by
- ABetween groups variance / Within groups variance
- BNumber of participants - 1
- CNumber of groups - 1
- DBetween sum of squares / Total sum of squares
2What does a larger F-ratio show?
- AThere are larger systematic effects present
- BThe test is powerful
- CThe results are insignificant
- DThe number of participants
3Why use ANOVA over t-test?
- ATo reduce likelihood of Type 1 error
- BTo reduce likelihood of Type 2 error
- CTo estimate the range in which we expect the population mean to fall 95% of the time
- DTo increase likelihood of Familywise error
4If in a randomised ANOVA there are 4 groups with 15 participants in each group, what will the df be for the F-ratio?
- A3, 56
- B3, 59
- C4, 56
- D4, 59
5If a researcher reported an F-ratio with a df = 2,21 for a one-way ANOVA, then there were ___ conditions in the experiment and ___ total participants
- A3, 24
- B3, 22
- C3, 23
- D3, 21
6If a one-way ANOVA produced mean square between = 25, and mean square within = 5, then the F ratio would be?
- A5
- B25
- C24
- D4
7What is a factorial design?
- AWhen we have manipulated more than one IV/factor
- BWhen we have manipulated only one IV/factor
- CWhen there is more then one DV/outcome
- DWhen there is high Familywise error
8In a study examining the effects of time of day (morning, afternoon, evening) and teaching style (lecture only, lecture and small group discussion) on student attentiveness how many main effects and interaction effects are possible?
- A2 main effects; 1 interaction effect
- B5 main effects; 1 interaction effect
- C3 main effects; 4 interaction effects
- D2 main effects; 2 interaction effects
9If a plot has been produced representing the data and the lines are not parallel, then what sort of effect is most likely?
- AInteraction
- BMain
- CSystematic error
- DRandom error
10What information does a correlation coefficient r statistic give you? (2)
- AMagnitude/size
- BDirection
- CSignificance
- DNumber of participants
11Identify the correlation coefficients representing the weakest and strongest degree of linear relationship? (2)
- A.05 = weak
- B-1.0 = strong
- C.89 = strong
- D0.5 = weak
12If the points on a scatterplot are clustered in a pattern that extends from the upper left to the lower right, what sort of relationship is inferred?
- ANegative
- BPositive
- CNo relationship
- DSmall
13In an ANOVA, what do we use to compare all possible pairs of groups to determine which ones differ significantly from each other?
- APost-hoc
- BT-test
- COne-way ANOVA
- DPlots
14[blank_start]Statistical power[blank_end] is the ability of a test to detect an effect, we can use this to determine how big a sample is required to detect an effect of a certain size and is linked to the probability of making a type [blank_start]1[blank_end] error
- AStatistical power
- BEffect size
- CConfidence intervals
- D1
- E2
15If you are constructing a data file for a repeated measures design with 10 participants and three conditions, how many columns and rows will the file have?
- A4 columns, 10 rows
- B3 columns, 10 rows
- C3 columns, 11 rows
- D4 columns, 20 rows
16What info does a box plot display? (4)
- AMedian
- BHigh and lower non-outliers
- CInterquartile range
- DOutliers
- EMode
- FMean
17What does R squared show?
- AProportion of variance in the outcome accounted for by the predictor variable/s
- BAbility of test to detect an effect
- CUsing data to estimate population mean which is always smaller than the SD
- DHow much each P deviates from the mean
18How many outcome variables can a multiple regression examine in one model?
- AOne
- BTwo
- CThree
- DFour
19What method can you use to eliminate poor predictors in a multiple regression analysis?
- ABackwards elimination
- BCounterbalancing
- CPaired samples
- DBonferroni corrections
20A [blank_start]95[blank_end]% confidence interval, as displayed on an [blank_start]Error Bar chart[blank_end], shows the [blank_start]range[blank_end] in which we expect the population mean to fall 95% of the time given other samples such as the one collected
- A95
- B99
- C68
- DError Bar chart
- EPlot
- Frange
- Gaverage
21Applying a criterion for significance based on the usual criterion for significance (0.05) divided by the number of tests performed is known as:
- ABonferroni correction
- BT-test
- CANOVA
- DGeneral linear model
22Identify the difference between between and repeated measures designs: (2)
- ABetween: participants take part in one condition only
- BRepeated: participants take part in all conditions
- CBetween: participants take part in all condition
- DRepeated: participants take part in one condition only
23How many DV's does a two-way ANOVA have?
- AOne
- BTwo
- CMore than one
- DThree
24What statistical values from the ANOVA output should you include when reporting results? (4)
- AF value
- BDF
- CP value
- DMSE (mean square error)
- EPearson's r
- FT value
25How would you access a mixed design ANOVA on SPSS?
- AAnalyse - General linear model - repeated measures
- BAnalyse - Compare means - independent t-test
- CAnalyse - General linear model - univariate
- DAnalyse - Plots
26Identify two broad types of designs that quantitative psychologists use when conducting research? (2)
- AExperimental
- BCorrelational
- CInterview
- DCase study
27What figure should you examine in a multiple regression output to examine the influence that one predictor variable has had on the outcome?
- AUnstandardised beta
- BStandardised beta
- CF value
- DP value
28A random error is more of a problem in analysis as it distributed randomly across the data
- ATrue
- BFalse
29A systematic error is a problem for analysis as it makes it hard to differentiate between real effects and bias effects
- ATrue
- BFalse
30Identify a type 1 and type 2 error: (2)
- AType 1: falsely reject null, say effect when there isn't
- BType 2: fail to reject null, say no effect when there is
- CType 1: fail to reject null, say no effect when there is
- DType 2: falsely reject null, say effect when there isn't
31What is the standard value that psychologists use to ensure that it is unlikely that we make a type 1 error?
- A5%
- B0.005
- C1%
- D0.001
32What is SD to variance?
- ASD is square root of variance
- BVariance is square root of SD
- CMean to mode
- DSquared deviation of mean
33Statistical significance is [blank_start]dependent[blank_end] on sample size, effect size is [blank_start]independent[blank_end] of sample size, allowing the researcher to focus on both type 1 and type 2 errors
- Adependent
- Bindependent
- Cindependent
- Ddependent
34Identify standardised and unstandardised coefficients: (2)
- AStandardised: measured in SD units so they can be compared across predictors
- BUnstandardised: measured in same units as original variable
- CUnstandardised: measured in SD units so they can be compared across predictors
- DStandardised: measured in same units as original variable
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- RDA2 - Quantitative Quiz on Workshop 12 Q's, created by Róisín Farmer on 03/01/2017.
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- Róisín Farmer
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- English
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