Question:
A set of data contains 53 observations. The minimum value is 42 and the maximum value is 129. The data are to be organized into a frequency distribution.
a. How many classes would you suggest?
b. What would you suggest as the lower limit of the first class?
Answers
Answered by
1
Answer:
40 - 50
50 - 60
60 - 70
70 - 80
80 - 90
90 - 100
100 - 110
110 - 120
120 - 130
Answered by
2
Answer:
ʀᴇꜱᴜʟᴛꜱ:
ᴀ. 6 ᴄʟᴀꜱꜱᴇꜱ
ʙ. 40
Explaining:
ᴀ. ɪꜰ ᴋ ɪꜱ ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏꜰ ᴄʟᴀꜱꜱᴇꜱ ᴀɴᴅ ɴ ɪꜱ ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏꜰ ᴏʙꜱᴇʀᴠᴀᴛɪᴏɴꜱ, ᴛʜᴇɴ ꜰᴏʀ ᴄʟᴀꜱꜱ ɪɴᴛᴇʀᴠᴀʟꜱ, ꜱᴇʟᴇᴄᴛ ᴛʜᴇ ꜱᴍᴀʟʟᴇꜱᴛ ᴋ ꜱᴜᴄʜ ᴛʜᴀᴛ 2 > ɴ.
ʜᴇʀᴇ, ɴ 53. ɪꜰ ᴋ 5, ᴛʜᴇɴ 2 = 25 = 32 ᴡʜɪᴄʜ ɪꜱ ʟᴇꜱꜱ ᴛʜᴀɴ ɴ = 53. ꜱᴏ. ᴋ = 5 ᴄᴀɴɴᴏᴛ ʙᴇ ᴜꜱᴇᴅ. ɪꜰ ᴋ = 6, ᴛʜᴇɴ 2 = 26 = 64 ᴡʜɪᴄʜ ɪꜱ ɢʀᴇᴀᴛᴇʀ ᴛʜᴀɴ ɴ = 53. ꜱᴏ, ɴᴜᴍʙᴇʀ ᴏꜰ ᴄʟᴀꜱꜱᴇꜱ ᴡɪʟʟ ʙᴇ 6.
ʙ . ꜱᴇᴇ ᴛʜᴇ ᴀʙᴏᴠᴇ ᴀᴛᴛᴀᴄʜᴍᴇɴᴛ
Attachments:
Similar questions