65-85
85-105
105-125
125-145
145-165
165-185
185-205
Find the difference of the upper limit of the median class and the lower limit of the modal class
Answers
Answer:
20 is the ans
Step-by-step explanation:
145-165=20
The complete data is,
Class Frequency
65-85 4
85-105 5
105-125 13
125-145 20
145-165 14
165-185 7
185-205 4
Class Frequency Cumulative frequency
65 - 85 4 4
85 - 105 5 4 + 5 = 9
105 - 125 13 9 + 13 = 22
125 - 145 20 22 + 20 = 42
145 - 165 14 42 + 14 = 56
165 - 185 7 56 + 7 = 63
185 - 205 4 63 + 4 = 67
N = ∑Freq = 4 + 5 + 13 + 20 + 14 + 7 + 4 = 67
N/2 = 67/2 = 33.5
Therefore, the median class is, 125 - 145
The upper limit of the median class is 145
The class with highest frequency is called the modal class
Therefore the modal class is 125 - 145 with a frequency of 20.
The lower limit of the modal class is 125.
The difference of the upper limit of the median class and the lower limit of the modal class is 145 - 125 = 20.