Stats
Card Set Information
Author:
julidei
ID:
153626
Filename:
Stats
Updated:
2012-05-12 22:17:31
Tags:
Stats
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Description:
Stats
Show Answers:
What value in a one way ANOVA indicates proportion of variance explained
F
The impact of the independent variable is represented in which statistic
SSb
What does the 'mean' in 'mean square' indicate
An average measure of variance
What does the one way in one way ANOVA indicate
the fact that there is just one independent variable
What is scale of the independent variable in ANOVA
nominal
What is scale of the independent variable in ANOVA
nominal
In an ANOVA what symbol is used to indicate the number of groups
k
What of the following is true in an ANOVA
The SSw consists entirely of error variance
The dependent variable in ANOVA must be at least of what scale
nominal
Which statistic is the ratio of treatment variance to error variance
F
what statistic measures within group variability in a z-score problem
the standard error of the mean
Which value measures sample variability in the distribution of sample means
the standard deviation
what value of z includes the middel 95% of thedistribution of sample means
+/- 1.96
when comparing the distribution of sample means to a distribution of individual scores, which is accurate
omega does not equal omega means, mu equals mu means
what is the scale of the data when students are identified according to major
ratio
which measure of central tendency is most affected by outliers
mean
if data have positive skew, what's the order of the central tendency measures from left to right
mode, median, mean
I have scores of 2, 3, 3, 4, 5, 6, 6, 6, 7. which value is the median
5
which is the only statistic that can be calculated for nominal scale data
the mode
increasing the number of scores near the mean has which effect
the standard deviation will decrease
the vertical height of the line in a frequency distribution indicates which
the number of cases of a particular score
a distribution has s=3.0 and R=24. Which is accurate?
The distribution is leptokurtic
which statistic measures within group variability in a z score problem
the standard error of the mean
which value measures sample variability in the distribution of the sample means
the standard error of the mean omega means
what is the lowest value omega squared can have
0
SEm is a statistic. what is the equivalent parameter
omega means
failing to reject the null hypothesis is the same as acknowledging which
differences are likely just random
there are many t distributions. each is defined by which
degrees of freedom
which statistics is described as 'an estimate of pooled variance'?
the standard error of difference
which of the following estimates the standard deviation of all 'difference' scores
SEd
the standard error of the mean measures variability from what sources
the variability within one group
which of the following defines alpha (type 1) error
rejecting the null when there is no difference
which of the following will increase the value of t in an independent t-test
rejecting the null when there is no difference
if you test at p=.05 and reject the null hypothesis, what's the probability of a error
.05
if you test at p=.05 and reject the null hypothesis, what's the probability of B error
0
the one sample t-test answers which question
does the sample belong to the described population
the point of calculating an effect size is which
to determine the practical importance of the result
why do critical values decrease as degrees of freedom increase
because the sample becomes more normal as df increases
the confidence interval indicates which
the range within which the true value is likely to occur