In: Math
Using the
2 Superscript k Baseline greater than or equals n
rule, determine the number of classes needed for the following data set sizes.
| 
 a)  | 
 nequals  | 
50
| 
 b)  | 
 nequals  | 
400
| 
 c)  | 
 nequals  | 
1250
| 
 d)  | 
 nequals  | 
2500
a) The number of classes needed when
nequals
50is
nothing
.
b) The number of classes needed when
nequals
400is
nothing
.
c) The number of classes needed when
nequals
1250is
nothing
.
d) The number of classes needed when
nequals
2500is
nothing
.
a)
According of rule, k must satisfied following inequality:


Taking log of both sides



That is k should be at least 6.
b)
According of rule, k must satisfied following inequality:


Taking log of both sides



That is k should be at least 9.
c)
According of rule, k must satisfied following inequality:


Taking log of both sides



That is k should be at least 11.
d)
According of rule, k must satisfied following inequality:


Taking log of both sides



That is k should be at least 12.