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Exam 1 Statistics (BER 345) Questions with Correct Answers

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  • Bio 342
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  • Bio 342

Categorical Frequency Distribution Correct Answer-used for data that can be placed in specific categories such as nominal or ordinal level data Grouped Frequency Distribution Correct Answer-When the range of the data is large, the data are separated into groups called class intervals. Histogr...

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  • August 4, 2024
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Exam 1 Statistics (BER 345) Questions with Correct
Answers
Categorical Frequency Distribution Correct Answer-used for data that
can be placed in specific categories such as nominal or ordinal level data


Grouped Frequency Distribution Correct Answer-When the range of the
data is large, the data are separated into groups called class intervals.


Histogram Correct Answer-Is a graph that displays the data by using
contiguous vertical bars of various heights to represent the frequencies
of classes.


Frequency Polygon Correct Answer-Is a graph that displays the data by
using lines that connect points plotted for the frequencies at the
midpoints of the classes. The frequencies are represented by the heights
of the points.


Ogive Correct Answer-A graph that represents the cumulative
frequencies for the classes in a frequency distribution


What are the different shapes of distributions? Correct Answer-- Bell-
Shaped
- Positively or Right Skewed Shaped
- Negatively or Left Skewed Shaped
- J-shaped
- Reverse J-Shaped

, - Bimodal-Shaped
- U-Shaped


Bell-Shaped Distribution Correct Answer-- Has a single peak & tapers
off at either end & is roughly symmetric on both sides of the line
running through the center


Positively (Right) Skewed Distribution Correct Answer-- When the peak
of the distribution is to the left and the data values taper off to the right


Negatively (Left) Skewed Distribution Correct Answer-- When the data
values are clustered to the right and tapers off to the left


J-Shaped Distribution Correct Answer-- Has a few data values on the
left side and increases as one moves to the right


Reverse J-Shaped Distribution Correct Answer-- The frequencies are
very low on the right and increase towards the left with a peak in the
class on the far left


Bimodal-Shaped Distribution Correct Answer-- When a distribution has
two peaks of the same height


U-Shaped Distribution Correct Answer-- Has peaks on the extreme left
and right and low frequencies toward the center

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