The sum of all the data items divided by the number of data items.
What is the mean or average?
100
Find the mode of the following data set.
8, 7, 2, 4, 4, 8, 2, 4, 6, 5, 7, 3, 9, 4, 5, 4, 7
4
100
The median of the lower half of the data set is the
first quartile (Q1)
100
Stating that the null was false when it was indeed true.
Type I error
200
The most occurring item(s) in the data set.
Mode
200
When a distribution’s mode = median = mean, it is said to be
distributed this way.
Normally distributed
200
The median of the upper half of data is called the
3rd quartile (Q3).
200
A z-score of zero always means that
the raw score is equal to the mean
200
Lower alpha increases the chances of making this error.
Type II error
300
The middle of the dataset.
Median
300
This is the key sequence to begin entering our data into the calculator.
STAT - EDIT - 1
300
The line drawn in the middle of a box and whisker designates the
median.
300
The mean of a z-score distribution is always __________, and the standard deviation is always __________.
0; 1
300
What one does when the obtained probability is larger than alpha.
What is Accept the Null?
400
The _______ _______ shows the frequency of each data value.
Frequency Table
400
Niles scored 70, 74, 72, 71, 73, and 96 on his six human geography tests. Find his current grade (mean).
Niles' grade is 76.
400
The five number summary is
minimum, 1st quartile, median, 3rd quartile and maximum.
400
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What does the standard deviation mean?
400
When a hypothesis states a direction to its perdiction, it is called...
A one tail
500
A distribution that is symmetrical, that has as its middle score the score with the highest frequency, and that has decreasing frequencies as scores move further from the middle score is called a(n) __________ distribution.
Normal distribution
500
In a simple frequency distribution constructed from the data 9, 8, 8, 7, 7, 7, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 0, 0, the median is
4.
500
To calculate the interquartile range you
subtract the 1st quartile from the 3rd quartile.
500
Alicia scored a 70 on her psychology quiz, but the class as a whole averaged a 40. If the standard deviation was 10, what was Alicia’s z-score?
3
500
Even if statistical significance is found, one must rule out other variables having possibly impacted the results. What hypothesis is considered here?