Is a group of subjects selected from a population.
What is a sample.
100
A circle that is divided into sections or
wedges according to the percentages of
frequencies in each category of the
distribution.
What is a Pie graph.
100
The difference of the highest and lowest value.
What is the Range formula.
100
A student scored 65 on a calculus test that had a mean of 50 and a standard deviation of 10.
What is 1.5.
100
The variance is 133.58. The standard deviation is...
What is 11.6.
200
Is defined as the difference of the highest and lowest values in the data set.
What is range.
200
Is used to represent a frequency
Distribution for a categorical variable,
and the frequencies are displayed by the
heights of vertical bars, which are arranged
in order from highest to lowest.
What is a Pareto.
200
The sum of all values, divided by the total.
What is the Mean formula.
200
A history test has a mean of 100 and a
standard deviation of 10, a student scored 93.
What is -.7.
200
The standard deviation is 3.1. The variance is...
What is 9.61.
300
When data is collected in original form.
What is raw data.
300
Is a graph that displays the data using continuous vertical bars of various heights to represent the frequencies of the classes.
What is a histogram.
300
The value minus the mean, divided by standard deviation.
What is the Zscore formula.
300
A student score 82 on a test
that has an average of 84 and a variance of 16.
What is -.5
300
1, 2, 3, 3, 7, 11, 18, 30, 61
The mean is...
What is 15.1.
400
A study where the researcher merely
observes what is happening or what has happened in the past and tries to draw conclusions based on these observations.
What is observational study.
400
A graph that represents the cumulative frequencies for the classes in a frequency distribution
What is Ogive or Cumulative Frequency Graph.
400
Frequency divided by total, then multiplied by 100%.
What is Percent formula.
400
A student scores 60 on a math test that has a mean of 54 and a standard deviation of 3, and she scores 80 on a history test with a mean of 75 and a variance of 4. What is each z-score and which test did she perform better?
What is Math z=2.0 History z=2.5.
The student did better on the History test.
400
1, 2, 3, 3, 7, 11, 18, 30, 61
The midrange is...
What is 31.
500
When samples are selected by using
chance methods or random numbers.
What is random sampling.
500
This graph uses midpoints for the x-axis and frequencies for the y-axis.
What is a Frequency Polygon.
500
The sum of the number of values below X and 0.5, divided by the total number of values. Finally, multiply by 100%.
What is the Percentile Rank formula.
500
A student has a reaction time of 2.7 with a mean reaction of 2.5 seconds and a standard deviation of .3.
What is .67.
500
0-2
3-5
6-8
9-11
12-14
The sum of Frequency multiplied by Midpoint for this table is...