What is the best measure of central tendency when the data is evenly distributed. The arithmetic average.
100
In a distribution of this shape the mean is always higher than the median.
What is positive skew.
100
The average distance of all scores from the mean.
What is population standard deviation.
100
In a distribtion with scores 0,1,1,1,2,2,3,3
1 is the ...
What is mode.
100
The range, variance, and standard deviation.
What are measures of dispersion or variability?
200
Mode
What is value or score that occurs most often. Best for ordinal or nominal data.
200
In a distribution of this shape the mean is always lower than the median.
What is negative skew.
200
The average of the sum of the squared differences from the mean.
What is population variance.
200
In a distribution of eye color from a sample of students the best measure of central tendency is...
What is mode.
200
The mean, median, and mode.
What are measures of central tendency?
300
Median
What is the exact mid point of the range of scores.
300
Adding a score equal to the mean does not change the...
What is the mean.
300
First one calculates the mean. Second one finds the differences of each score from the mean. Third one squares all these difference. Fourth one sums the squared differences. Fifth one divides by the number of scores minus one.
What is the formula for sample standard deviation.
300
A population with scores has a mean=26. a median=23, and a mode =22 is shaped in a ......
What is positive skew.
300
Numbers or characteristics used to describe a sample.
Descriptive statistics.
400
This distribution has mean=mode=median.
What is a symmetrical distribution?
400
Tripling each score in a distribution will triple the...
What is mean.
400
First one sums all the scores. Second one divides by the number of scores.
What is the formula for calculating the mean.
400
The best measure for central tendency in a collection of ordinal data.
What is the mode.
400
Numbers or characteristics used to guess parameters of a population.
What are inferential statistics?
500
The best measure of central tendency when the data is markedly skewed by extreme scores.
What is the median?
500
Two unequal scores have the highest frequencies of occurrence. The score with the higher frequency is the...
What is major mode.
500
First one locates the highest and lowest scores. Second one subtracts the lowest from the highest.
What is the method of calculating the range?
500
In such a distribution the median is a much better indicator of central distribution than the mean.
What is a markedly skewed distribution?
500
When a sample mean is not exactly the same as the population mean we have an example of...