Question

PLEASE ANSWER! a) for each set of data draw the most suitable graph. justify your choice. b) decribe the trends that u see in the data be descriptive. question: the following are the math test scores out of 100, for grade 8 students: 78, 56, 73, 69, 82, 30, 55, 47, 60, 21, 73, 49, 89, 93, 59, 76, 70, 88, 100, 73, 97, 50, 65, 77, 53, 62, 80, 91, 76, 83. Can you please tell me all steps, what graph to use, what scales to go by, and what to do? it involves stem and leaf plot, histogram, and frequency table!

Answer 1

well, what do you think might be a good way to start with this? we have a bunch of grades and maybe we'd like to see how many people got A's B's C's or something like that

Answer 2

uh start with stem and leaf?

Answer 3

hm, well I think a "frequency table" sounds pretty good, since we can easily just count how many A's there are (90-100) and how many B's there are (80-89) and so on

Answer 4

how many A's B's C's D's and F's are there in that dataset?

Answer 5

there are... at least 3 a's

Answer 6

uhhh 5 b's

Answer 7

8 c's

Answer 8

lol, yeah the counting will take a bit

Answer 9

does 80's count as a's?

Answer 10

I'd think that it would be like this A: 100-90 B: 89-80 C: 79-70 D 69-60 and F is 59 and below

Answer 11

ooh
ok

Answer 12

so count how many a,b,c,d,f we have and then I'll show you a frequency table. then maybe we can make a histogram from that together!

Answer 13

ok. so for a's i have 3 which is 91-97

Answer 14

wait brb!

Answer 15

I see at least 4 A's: 91 97 100 93

Answer 16

you might write them down and cross them off as you tally them up or something like that

Answer 17

no hurry, I'll wait until you're done countin' em

Answer 18

I'm suggesting to just do A B C D F and don't worry about like A+ or anything like that for now, just less things to count up.

Answer 19

are you still there, counting them up?

Answer 20

im here!

Answer 21

are you still there?

Answer 22

ok so a's 91-97 with 3

Answer 23

b's with 80-89 with 5

Answer 24

I defined A's as 90-100 which there are 4, but that's fine

Answer 25

c's 70-78 with 8

Answer 26

oh

Answer 27

wait, how should i write it out then?

Answer 28

but yeah, how many D's and Fs?

Answer 29

well i have 60-69 with 4

Answer 30

50-59 with 5

Answer 31

47-49 with 2

Answer 32

59 and less for F's

Answer 33

oh right

Answer 34

then there 21 and 30 yea..

Answer 35

A: 100-90 B: 89-80 C: 79-70 D 69-60 and F is 59 and below

Answer 36

so that's 4A's 5B's 8C's 4D's and 9 F's?

Answer 37

I'll draw a frequency table of that:

Answer 38

i think its 3 a's