Question

Which action will change the mode of the data set shown?
Data I Freqeuncy
19 I 5
20 I 3
26 I 6
29 I 3
A.) adding two more 26s
B.) adding two more 19s
C.) adding two more 20s
D.) removing one 19

Answer 1

start by finding the mode of given dataset

Answer 2

look at frequency column,
wats the big number u see ?

Answer 3

6

Answer 4

yes, look at the the left side of 6

Answer 5

26 I 6

Answer 6

u see 26,
that means, 26 was observed 6 times right ?

Answer 7

since 26 was observed highest number of times,
26 is the mode of given dataset

Answer 8

next, look at given options

Answer 9

A.) adding two more 26s

Answer 10

do u think adding any more 26s wud change the mode ?

Answer 11

if u add two more 26s, the table wud look like below :-

Data I Freqeuncy
19 I 5
20 I 3
26 I 8 *****
29 I 3

Answer 12

whats the mode now ?

Answer 13

oh ok so the mode is 26

Answer 14

yup, adding 26s wud not affect the mode

Answer 15

strike off first option.

lets test second option

Answer 16

B.) adding two more 19s

Answer 17

wat do u think ? wat wud be the new mode ?

Answer 18

after adding two more 19s, the table wud look like below :-
Data I Freqeuncy
19 I 7
20 I 3
26 I 6
29 I 3

Answer 19

look at the new table and see if the mode is still 26 or not ?

Answer 20

its 19

Answer 21

Yes !, so...

Answer 22

the mode got changed from 26 to 19!
that means optionB is ur answer right ?