Elementary Statistics Certification Evaluation Verified Questions With Complete Solutions

ELEMENTARY STATISTICS CERTIFICATION
EVALUATION VERIFIED QUESTIONS WITH
COMPLETE SOLUTIONS

●● Lower Class Limit
Answer: Least number that can belong to a class


●● Upper Class Limit
Answer: Greatest number that can belong to a class


●● Class Width
Answer: Distance between lower and upper limits of a consecutive class
Ex: Lower limit 2 - lower limit 1 = class width
Upper limit 2- upper limit 1 = class width


●● Range
Answer: Difference between the maximum and minimum data entries


●● Midpoint
Answer: Sum of the lower and upper limits of the class divided by 2

, ●● Relative Frequency
Answer: The portion or percentage of the data that falls in that class
Relative Frequency = class frequency/sample size = f/n


●● Cumulative Frequency
Answer: Sum of the frequencies of that class and all previous classes
Cumulative frequency of the last class should equal the sample size


●● Frequency Histogram
Answer: A bar graph that represents the frequency distribution of a data
set
1. The horizontal scale is quantitative and measure the data entries.
2. Vertical scale measures the frequencies of the classes
3. Consecutive bars much touch


●● Class boundaries
Answer: Numbers that separate classes without forming gaps between
them


●● Frequency Polygon
Answer: A line graph that emphasizes the continuous change in
frequencies