Descriptive Statistics Dot Plot Box Plot 2 Data Sets
Enter your data into cells A2 through A101 (maximum of 100 data points) for the first data set and enter the data from the second data set into cells B2 through B101.
The dot plot for the data sets are displayed when the Dot Plot box is checked.
The scale is automatically adjusted.
Click on the various check boxes to see the following numerical and
graphical statistics displayed:
Box Plot
Quartiles (Measures of Relative Standing: 5 values divide the data into
four parts with the same amount of data in each part) (Note that there
are multiple methods for computing quartiles Q1 and Q3. GeoGebra uses
the same method used by TI-84 calculators. Rank the data and find the
median of the lower half for Q1 and the median of the upper half for Q3.
The median is not counted as part of either half when there is an odd
number of data values.)
Measures of Central Tendency
Mean: Add up the data values and divide by the number of data values
(average)
Median: 1/2 of ranked data is below and 1/2 of ranked data is above
the median
Mode: The most often occurring data value(s)
Midrange: (minimum + maximum)/2
Midquartile: (Q1 + Q3)/2
Measures of Variability
Range = Maximum - Minimum
IQR = Q3 - Q1
MAD = sum(absolute value of mean - data)/number of data points
Standard Deviation = sum(mean - data)^2/(n-1)
The data that is loaded the first time that this activity is opened is
the age at time of award of the Academy Award Winners for Best Actor in a Leading Role (data set 1) and the age at time of award of the Academy Award Winners for Best Actress in a Leading Role (data set 2) (i.e. ages of Best Actor and Best Actress Oscar Winners). The data goes through awards given in 2021.
Is there a gender difference in how the Academy treats men and women? Use the graphs and statistics to justify your position.