What do you mean?
The average of several number values
What is mean?
The statistical analysis that compares observed data with expected data that tells you whether or not numbers are significant
What is chi-squared test?
A hypothesis that states that there is no difference between two or more sets of data
What is null hypothesis?
The average difference of each value in a group from the mean value
What is standard deviation?
The maximum number of logically independent values, which may vary in a data sample
What is degree of freedom?
The middle value of a group of values found by arranging all the observations from lowest to highest and picking the middle one
What is median?
The meaning of O in the chi-squared equation
What is observed result?
A hypothesis that states that there is a statistically significant relationship between two variables
What is alternative hypothesis?
A probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean
What is normal distribution?
The calculation used to find the degrees of freedom
What is subtracting one from the number of items within a data sample?
The most frequent value in a group of values
What is mode?
The meaning of E in the chi-squared equation
What is expected result?
Measures the probability of the null hypothesis being true compared to the acceptable level of uncertainty regarding the true answer
What is statistical significance?
The shape of normal distribution when graphed
What is a "bell curve".
A statistical test which compares the mean of two sets of data
What is t test?
The measure of the spread of values within a group
What is variance?
The hypothesis that you accept if the chi-squared value is greater than the critical value
What is alternative hypothesis?
A probability that measures how likely it is that any observed difference between groups is due to chance
What is p value?
The percent of observations that will fall within one standard deviation of normal distribution
What is 68.2%?
The difference between two means when the calculated value of t is greater than the value at 5%
What is significant?
Found when you divide the sum of the values by the number of values
What is mean?
The hypothesis that you accept if the chi-squared value is less than the critical value
What is null hypothesis?
A point on the distribution of the test statistic under the null hypothesis that defines a set of values that call for rejecting the null hypothesis.
What is critical value?
The percent of observations that will fall within two standard deviations of normal distribution
What is 95.4%?
The difference between two means when the calculated value of t is less than the value at 5%
What is insignificant?