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Compare Two Population Means
Confidence Interval & Significance Test
Two Dependent Samples
Enter Data:
From Textbook
Summary Statistics
Provide Own
Dataset:
Text & Graph
Reaction Times
Petting vs. Vocal Praise
Dominance of Politicians
Time on Facebook
Hours of Exercise Per Week
Feeling Sad
Comparing Dosages
Name of Response Variable:
Group 1 Label:
Group 2 Label:
Enter observations for each group, seperated by spaces or commas, or copy & paste from spreadsheet:
Group 1 Data:
Group 2 Data:
Type of Plot:
Boxplot
Dotplot
Histogram
Group 1:
Sample Size:
Sample Mean:
Sample Std. Dev.:
Group 2:
Sample Size:
Sample Mean:
Sample Std. Dev.:
Type of Inference:
Confidence Interval
Significance Test
Confidence Level (in %):
Interval, Lower or Upper Bound?
Interval
Lower
Upper
Alternative:
Two-sided
Less
Greater
Options:
Show
t-score
for Margin of Error
Assume Equal Standard Deviations
More Info on Dataset
Plot of Data
Plot of Interval
Show Degrees of Freedom
Assume Equal Standard Deviations
Null Value for Difference
Null Value for Difference in Means:
Decision Reject/Not Reject
Significance Level
More Info on Dataset
Plot of Data
Plot of P-value
Enter Data:
From Textbook
Provide Own
Dataset:
Climate Change
Reaction Times (Paired Experiment)
Movie & Sport Attendance
Party & Sport Attendance
Movie & Party Attendance
Name of Response Variable:
Group 1 Label:
Group 2 Label:
Enter observations for each group, seperated by spaces or commas, or copy & paste from spreadsheet:
Group 1 Data:
Group 2 Data:
Type of Plot:
Boxplot
Dotplot
Histogram
Type of Inference:
Confidence Interval
Significance Test
Confidence Level (in %):
Interval, Lower or Upper Bound?
Interval
Lower
Upper
Alternative:
Two-sided
Less
Greater
Options:
Show Differences
Show
t-score
for Margin of Error
More Info on Dataset
Plot of Data
Plot of Interval
Show Degrees of Freedom
Null Value for Difference
Null Value for Mean Difference:
Decision Reject/Not Reject
Significance Level (in %)
More Info on Dataset
Plot of Data
Plot of P-value