Quiz
RDA2 Topic 1
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Questions in this quiz (18)
1Define the mean.
- Athe middle score in a distribution, such that half of the scores are above and half are below that value
- Bthe calculated average of the scores in a distribution
- Cextreme outliers
- Dmost common score
2What is the median?
- Aextreme high or low scores
- Bsquare root of variance
- Cmost common number
- Dthe middle score in a distribution, such that half of the scores are above and half are below that value
3What is the mode?
- Amost common value
- Bmiddle number
4What is the standard deviation?
- Asquare root of variance. Average difference between scores and mean of a distribution.
- Bnumber of scores that can vary in the calculation of a statistic.
- Cmost common value.
- Dthe difference between the highest and lowest scores in a distribution.
5Define variance.
- Amost common value
- BData set in random order
- Cthe standard deviation of a distribution squared
- Dmiddle set value
6What is parametric data?
- AA set of assumptions about numerical data that needs to be adhered. specifically used with interval data and normality of distribution.
- Bsquare root of variance
- Cmost common value
- Daverage set of numbers
7Define ordinal and nominal data.
- AOrdinal: Data is set in order. Difference is not equal.
Nominal: Data set is in a nominal order. Sorted into categories. - BOrdinal: Data set is in a nominal order. Sorted into categories.
Nominal: Data is set in order. Difference is not equal.
- AOrdinal: Data is set in order. Difference is not equal.
8What is skewness?
- Adistribution of scores on a variable varies from normality.
- Bmost common number
- Cestimate of population mean
- Ddifference between highest and lowest scores
9How do you calculate a Z-score?
- Az=SD/z-mean
- Bz=mean-score/SD
- Cz=SD/mean-z
- Dz= score-mean/SD
10What is a 95% confidence interval?
- AThe deviance from the mean
- BEstimate of the population mean. The range in which we are 95% confident that the population mean lies between
- Cnominal ordered data
- D95% confident that the results are outliers
11A [blank_start]within[blank_end] designs is when the same people take part in a study, usually under [blank_start]different[blank_end] conditions or at different time points. This is also known as a repeated measures design.
- Awithin
- Bdifferent
12[blank_start]Between[blank_end] designs are where a study examines different people in the study. This is usually where studies examine different people are in separate conditions or where the study is examining existing group differences (such as gender).
- ABetween
13To test the effect of background music on productivity, a group of workers are observed. For one month they had no music. For another month they had background music. Between or Within designs?
- ABetween
- BWithin
14Ten different supermarkets were randomly selected. The price of whole milk and the price of skimmed milk were recorded from each store.
- ABetween
- BWithin
15What analysis do you conduct when you have two conditions (IVs) and you have the same people in each condition
- Apaired sample t-test
- Bindependent t-test
- Ccorrelation analysis
- Dmultiple regression analysis
16What analysis do you conduct when you have two conditions (IVs) and you have different people in each condition
- Apaired sample t-test
- Bcorrelation analysis
- Cindependent t-test
- Dregression analysis
17What type of analysis do you conduct when you are looking for a relationship between two variables?
- Aregression analysis
- Bcorrelation analysis
- Cpaired samples t-test
- Dindependent t-test
18A [blank_start]one tailed[blank_end] hypothesis is a directional hypothesis, whereas a [blank_start]two tailed[blank_end] is not.
- Aone tailed
- Btwo tailed
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- Description
- Quiz on RDA2 Topic 1, created by kiren bains on 14/12/2016.
- Author
- kiren bains
- Language
- English
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