Caption: FIGURE 4: Distribution of dry biomass and abundance in
class intervals of 10 cm (Area 1: 2009-2010).
A 10.5 cm
class interval was determined for the DBH, establishing eight different classes (Table 3).
First, the accuracy of 'wide' and 'narrow' intervals for each variable was assessed by calculating the proportion of observed values that fell within the 'narrow' and 'wide'
class intervals and producing exact binomial 95% confidence intervals (Cl) for each.
Analysis of density ranges with
class intervals of 25 m shows (Fig.
In Case Study 1, podcasts accessed the most fell in the 11-21 and 21-30
class intervals, which accounted for 38% and 33% of total podcasts.
We gain the width of the h
class interval by dividing the interval to k classes.
Summary data for author and article characteristics are included in the four tables that follow, collapsed into 4-year convenient
class intervals to facilitate trend analysis.
In the equation, 'I' refers to the number of compared
class intervals.
Statistically, these count categories are count
class intervals or bins with upper and lower limits expressed in C.
For this purpose, the number of intervals was determined by the equation proposed by Sturges: K = 1 + 3.322 log n, where K is the number of
class intervals and n is the number of values in the data set.
Each of these variables was recorded for the students during their classes as a percent of the total
class intervals.
Studies were divided into three
class intervals (ie, three groups of studies of different levels of 'quality,' low, medium and high).