Hilda N

17 November 2023 16:50

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Hilda N

17 November 2023 16:50

Pertanyaan

Diketahui data Nilai = 47-51,52-56,57-61,62-66,67-71 Frekuensi = 9,k,12,8,5 Modus = 59,5 Tentukan nilai K dan Median

Diketahui data 
Nilai = 47-51,52-56,57-61,62-66,67-71
Frekuensi = 9,k,12,8,5
Modus = 59,5
Tentukan nilai K dan Median

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Sumara S

18 November 2023 02:27

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<p>kelas modus = kelas median = 57 - 61 kelas ke-3</p><p>Tb kelas = 56,5</p><p>d1 = 12 - k</p><p>d2 = 12 - 8 = 4</p><p>p = 5</p><p>&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;d1</p><p>Mo = Tb + &nbsp; &nbsp;---------- x p</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;d1 + d2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;12 - k</p><p>59,5 = 56,5 + &nbsp; &nbsp;---------- x 5</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;12-k + 4</p><p>&nbsp; &nbsp; &nbsp; &nbsp; 60 - 5k</p><p>3 = ---------</p><p>&nbsp; &nbsp; &nbsp; &nbsp; 16 - k</p><p>48 - 3k = 60 - 5k</p><p>5k - 3k = 60 - 48</p><p>2k = 12</p><p>k = 6</p><p>&nbsp;</p><p>Tb = 56,5</p><p>n = 46</p><p>fk = 21</p><p>fm = 12</p><p>p = 5</p><p>&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; (½)n - fk</p><p>Me = Tb + &nbsp;------------- x p</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;fm&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(½)46 - 21</p><p>Me = 56,5 + &nbsp;-------------- x 5</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;12&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;23 - 21</p><p>Me = 56,5 + &nbsp;--------- x 5</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;12&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 10</p><p>Me = 56,5 + &nbsp;------</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 12&nbsp;</p><p>Me = 56,5 + 0,83</p><p>Me = 57,3</p><p>Jadi, nilai k = 6 dan median = 57,3</p><p>semoga membantu.</p>

kelas modus = kelas median = 57 - 61 kelas ke-3

Tb kelas = 56,5

d1 = 12 - k

d2 = 12 - 8 = 4

p = 5

 

                             d1

Mo = Tb +    ---------- x p

                       d1 + d2

                               12 - k

59,5 = 56,5 +    ---------- x 5

                             12-k + 4

        60 - 5k

3 = ---------

        16 - k

48 - 3k = 60 - 5k

5k - 3k = 60 - 48

2k = 12

k = 6

 

Tb = 56,5

n = 46

fk = 21

fm = 12

p = 5

 

                      (½)n - fk

Me = Tb +  ------------- x p

                           fm 

                         (½)46 - 21

Me = 56,5 +  -------------- x 5

                               12 

                         23 - 21

Me = 56,5 +  --------- x 5

                             12 

                          10

Me = 56,5 +  ------

                          12 

Me = 56,5 + 0,83

Me = 57,3

Jadi, nilai k = 6 dan median = 57,3

semoga membantu.


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Andrew F

18 November 2023 02:11

<p>47 - 51, f = 9</p><p>52 - 56, f = k</p><p>57 - 61, f = 12</p><p>62 - 66, f = 8</p><p>67 - 71, f = 5</p><p>&nbsp;</p><p>Modus = 59,5</p><p>&nbsp;</p><p>Melihat modusnya adalah 59,5 dan itu terletak pada kelas 57 - 61, maka bisa dikatakan bahwa modus data tersebut terletak pada kelas 57 - 61.</p><p>&nbsp;</p><p>Rumus modus data berkelompok :</p><p>Mo = Tb + (d1/(d1 + d2)) × p</p><p>&nbsp;</p><p>Tb = tepi bawah kelas modus</p><p>d1 = selisih frekuensi kelas modus dengan frekuensi sebelum kelas modus</p><p>d2 = selisih frekuensi kelas modus dengan frekuensi setelah kelas modus</p><p>p = panjang kelas interval</p><p>&nbsp;</p><p>Maka :</p><p>Mo = Tb + (d1/(d1 + d2)) × p</p><p>59,5 = 56,5 + ((12 - k)/(12 - k + 4) × 5</p><p>3 = ((12 - k)/(12 - k + 4) × 5</p><p>3/5 = (12 - k)/(16 - k)</p><p>3(16 - k) = 5(12 - k)</p><p>48 - 3k = 60 - 5k</p><p>- 3k + 5k = 60 - 48</p><p>2k = 12</p><p>k = 6.</p><p>&nbsp;</p><p>Rumus median :</p><p>Me = Tb + ((½n - fk)/f) × p</p><p>&nbsp;</p><p>n = banyak data</p><p>fk = frekuensi komulatif sebelum kelas median</p><p>f = frekuensi kelas median</p><p>&nbsp;</p><p>½ × n</p><p>½ × 40 = 20 (letak kelas median)</p><p>&nbsp;</p><p>57 - 61 (kelas mediannya)</p><p>&nbsp;</p><p>Me = Tb + ((½n - fk)/f) × p</p><p>56,5 + ((20 - (6 + 9))/12) × 5</p><p>56,5 + (20 - 15)/12 × 5</p><p>56,5 + 5/12 × 5</p><p>56,5 + 25/12</p><p>56,5 + 2,08</p><p>56,58.</p><p>&nbsp;</p><p>Jadi, median dari data berkelompok tersebut adalah 56,58.</p><p>&nbsp;</p><p>Semoga membantu.</p><p>&nbsp;</p>

47 - 51, f = 9

52 - 56, f = k

57 - 61, f = 12

62 - 66, f = 8

67 - 71, f = 5

 

Modus = 59,5

 

Melihat modusnya adalah 59,5 dan itu terletak pada kelas 57 - 61, maka bisa dikatakan bahwa modus data tersebut terletak pada kelas 57 - 61.

 

Rumus modus data berkelompok :

Mo = Tb + (d1/(d1 + d2)) × p

 

Tb = tepi bawah kelas modus

d1 = selisih frekuensi kelas modus dengan frekuensi sebelum kelas modus

d2 = selisih frekuensi kelas modus dengan frekuensi setelah kelas modus

p = panjang kelas interval

 

Maka :

Mo = Tb + (d1/(d1 + d2)) × p

59,5 = 56,5 + ((12 - k)/(12 - k + 4) × 5

3 = ((12 - k)/(12 - k + 4) × 5

3/5 = (12 - k)/(16 - k)

3(16 - k) = 5(12 - k)

48 - 3k = 60 - 5k

- 3k + 5k = 60 - 48

2k = 12

k = 6.

 

Rumus median :

Me = Tb + ((½n - fk)/f) × p

 

n = banyak data

fk = frekuensi komulatif sebelum kelas median

f = frekuensi kelas median

 

½ × n

½ × 40 = 20 (letak kelas median)

 

57 - 61 (kelas mediannya)

 

Me = Tb + ((½n - fk)/f) × p

56,5 + ((20 - (6 + 9))/12) × 5

56,5 + (20 - 15)/12 × 5

56,5 + 5/12 × 5

56,5 + 25/12

56,5 + 2,08

56,58.

 

Jadi, median dari data berkelompok tersebut adalah 56,58.

 

Semoga membantu.

 


Hilda N

18 November 2023 13:03

terimakasi banyakkk kaaaa

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