Question

it is the question of mean
plz solve it fast..​

Answer 1

Answer:

Step-by-step explanation:

x               f              m         fm

0-20        34           10         340

20-40      3x-4        30        90x-120

40-60       64          50        3,200

60-80       48          70        3,360  

80-100      2(x-1)      90       180x-180

now,

n(N)=34+3x-4+64+48+2x-2 =5x+140

∑fx=340+90x-120+3200+3360+180x-180

=270x+6600

now,

mean=∑fx/N

50=270x+6600/5x+140

250x+7,000=270x+6600

400=20x

x=20 is the answer.

Answer 2

Answer:

hii

Step-by-step explanation:

innerHTML property

Use the innerHTML property to change thetext inside the label. The innerHTMLproperty sets or returns the HTML content of an element.