The median is the most frequently occurring item in the data. True False Find th

Question

The median is the most frequently occurring item in the data. True False Find the following measures for the table below and match it to the correct answer Mean(2 d.p) Mode Range Standard Deviation (2 d.p) Variance (2 d.p) 4.20 2.15 4.62 6 3.15 8 6.54 Find the median of these numbers: 2.2, 2.4, 3.1, 2.3, 3.1 3.1 2.2 2.62 2.4 The mode is the most frequently occurring item in the data. True False Find the variance for the following set of data: 2,000 1,000 1,500 2,250 3,500 Round your answer to whole number where needed. Standard deviation Variance 1,884 843 710, 000 3,550, 000 The waiting times in minutes for a sample of 10 customers each at Du are: 7.4 3.2 5.5 7.4 7.4 9.5 9.8 5.5 6.2 3.9 Calculate the Range. 6.6 8 3.6 6.58 The mode is a positional average. True False

Explanation / Answer

Q1. False

Q2. Mean = (3*2+6*4+22*6+9*8+8*10)/(3+6+22+9+8) = 6.54

Mode = 6

Range = 10 - 2 = 8

Standard deviation = 2.15

Q3. Median = 2.4

Q4. True

Q5. Standard Deviation = 843

Variance = 710,000

Q6. Range = 9.8 - 3.2 = 6.6

Q7. False

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