Which of the following can be used to measure the shape of a distribution?
kurtosis
If you have a distribution of 100 scores and you want 20 intervals, what should be the size of your class interval?
5
A distribution of scores in which almost the entire class scored very high, but a few students scored fairly low, would be:
negatively skewed
Which of the following refers to distribution's curve that is relatively peaked in comparison to a normal curve?
leptokurtic
What do you call a continuous line that represents the frequency of scores within a class interval?
frequency polygon
What type of chart or graph displays class intervals along an x-axis?
histogram
A distribution of scores in which almost the entire class scored very low, but a few students scored fairly high, would be:
positively skewed
What you need to calculate first before calculating the kurtosis?
mean and standard deviation
If you have a distribution of 50 scores and you want 10 intervals, what should be the size of your class interval?
5
Kurtosis is used to
A) Measure the central tendency of the distribution
B) Describe the shape of an attribution
C) Measure the variance in the distribution
D) Describe the range of a distribution
B) Describe the shape of an attribution
What is the term associated with the upper or lower boundary of a set of scores used in the creation of a frequency distribution?
class interval
If a distribution is negatively skewed, the ________ is greater than the __________.
median/mean
This is a type of chart in which categories are organized horizontally on the x-axis, and values are shown vertically on the y-axis
column chart
What you need to calculate first before calculating skewness?
mean and median
What is the frequency distribution that shows frequencies for class intervals along with the cumulative frequency for each?
cumulative frequency distribution
Which of the following refers to distribution's curve that is relatively flat in comparison to a normal curve?
platykurtic
If you wanted to examine the proportion of students in this class who are male compared to female, which of the following might you use?
pie chart
f the Mean = 34 and the Median = 25, then what can be said of the distribution?
positively skewed
What is another name for a cumulative frequency polygon?
Ogive
hat is the term associated with how flat or peaked a distribution appears?
Kurtosis
If you have a distribution of 50 scores and you want 5 intervals, what should be the size of your class interval?
10
his is another word for "lopsidedness" of a distribution:
skewness
If a distribution is positively skewed, the ________ is greater than the __________.
mean/median
In order to say that a distribution is negatively skewed, which of the following must be true?
A) Right tail must be longer than the left
B) Left tail must be longer than the right
C) Both tails must be of equal length
D) The curve must be bell-shaped
B) Left tail must be longer than the right
What is a graphical representation of a frequency distribution?
Historgram