1/4 x 900 = 225.00
225.00 is the total
In a boxplot, there are 5 figures that are denoted, these are known as the 5-figure summary:
(1) the black dot to the very left of the boxplot is the minimum, or in other words the lowest data value
(2) the second black dot from the left is Q1 (quartile 1) and the area between the minimum and Q1 represents 25% of the data
(3) the middle dot is the median (or sometimes called Q2), which is the middle value of the data set - in this case it is 24
(4) the black dot to the right of the median represents Q3
(5) the black dot to the very right is the maximum value, or the highest data value
The linear relationship which exists between the change in weight and number of days of hibernation in a hedgedog can be modeled using the equation y = - 0.03 + 0
- Change in weight per day of hibernation = - 0.03
- Change in weight for 115 days = - 3.45 ounces
A linear model can be created using the data in the table given using a regression calculator or excel ;
The linear model obtained in the form y = m + bx is :
- y = - 0.03x + 0
- y = change in weight
- x = number of days of hibernation
- Intercept = 0
- Slope = -0.03
- The slope value of the function gives the change in weight value per number of days of hibernation ; which is -0.03.
- Using the regression equation, substitute, the vlaue of x = 115
- -0.03(115) + 0 = - 3.45
Therefore, the change in weight after 115 days of hibernation is - 3.45 ounces.
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