Soru

Zorluk: OrtaMeasures of Central Tendency

A logistics officer is analyzing data from various base operations. Match each statistical description on the left with its correctly calculated value on the right.

  • The mean weight, in pounds, of five crates weighing 4545, 6060, 5555, 4040, and 5050.5050
  • The median of six daily supply requests recorded as 1212, 1818, 1414, 2222, 1515, and 2020.16.516.5
  • The target value needed as a fifth shipment to achieve a mean of 2525, given prior shipments of 2020, 2424, 2828, and 2222.3131
  • The mode of vehicle repair times, in hours, logged as 44, 33, 66, 44, 55, 88, and 44.44

Cevap

The mean crate weight matches with 50, the median supply request matches with 16.5, the missing shipment for a target mean matches with 31, and the mode of repair times matches with 4.
Each pairing correctly applies the fundamental rules of mean, median, mode, and algebraic representation of statistical targets. The calculations strictly follow the rules for measures of central tendency.

Adım Adım Çözüm

1
Calculate the mean for the first description.
(45+60+55+40+50)/5=50(45 + 60 + 55 + 40 + 50) / 5 = 50
The mean is the arithmetic average of a data set.
2
Calculate the median for the second description.
Sorted list: 12,14,15,18,20,2212, 14, 15, 18, 20, 22. Average of middle two: (15+18)/2=16.5(15 + 18) / 2 = 16.5
The median is the middle value of an ordered set, or the average of the two middle values for an even number of items.
3
Calculate the missing value for the third description.
125−(20+24+28+22)=31125 - (20 + 24 + 28 + 22) = 31
The sum of all values must equal the target mean multiplied by the total number of values.
4
Identify the mode for the fourth description.
The number 44 appears three times.
The mode is the most frequent value in a data set.

Anahtar Kavram

Measures of Central Tendency
Bu soruyu puanla