19.3k views
3 votes
50 entries of cell phone airport data speeds (Mbps) from a particular network. Make sure you include all 50 entries in the calculation. Show work in each part to get full credit. 0.1 0.2 0.2 0.3 0.5 0.5 0.5 0.5 0.5 0.6 0.7 0.7 0.8 0.8 0.9 1.1 1.3 1.5 1.7 1.8 1.8 2.1 2.2 2.2 2.5 2.7 3.1 3.2 3.2 3.9 4.3 4.6 4.7 5.3 6.5 6.7 8.8 8.9 9.1 9.5 9.5 9.7 10.5 11.3 11.3 12.2 13.5 14.1 14.1 29.3 a) Find P65. b) Find the percentile corresponding to the given data speed. 5.3 Mbps c) Find Q1

User Blankabout
by
7.8k points

1 Answer

7 votes

Step-by-step explanation:

Step 1: Arrange the data in ascending order:

0.1, 0.2, 0.2, 0.3, 0.5, 0.5, 0.5, 0.5, 0.5, 0.6, 0.7, 0.7, 0.8, 0.8, 0.9, 1.1, 1.3, 1.5, 1.7, 1.8, 1.8, 2.1, 2.2, 2.2, 2.5, 2.7, 3.1, 3.2, 3.2, 3.9, 4.3, 4.6, 4.7, 5.3, 6.5, 6.7, 8.8, 8.9, 9.1, 9.5, 9.5, 9.7, 10.5, 11.3, 11.3, 12.2, 13.5, 14.1, 14.1, 29.3

Step 2: Calculate P65 (the 65th percentile):

P65 is the value at which 65% of the data is below and 35% is above. To find P65, you can use the formula:

P65 = (65/100) * (N + 1)

Where N is the total number of data points (50 in this case).

P65 = (65/100) * (50 + 1)

P65 = (65/100) * 51

P65 = 33.15

So, P65 is the 34th data point in the ordered list.

P65 = 6.7 (rounded to one decimal place)

So, the 65th percentile (P65) is 6.7 Mbps.

Step 3: Find the percentile corresponding to 5.3 Mbps:

To find the percentile corresponding to 5.3 Mbps, you can use the following formula:

Percentile = (Number of values below x / Total number of values) * 100

Where x is the given data speed (5.3 Mbps).

First, count how many values are below 5.3 Mbps. There are 30 values below 5.3 Mbps.

Percentile = (30 / 50) * 100

Percentile = (3/5) * 100

Percentile = 60%

So, the percentile corresponding to 5.3 Mbps is 60%.

Step 4: Find Q1 (the 25th percentile):

Q1 is the value at which 25% of the data is below and 75% is above. To find Q1, you can use the same formula as for P65:

Q1 = (25/100) * (N + 1)

Q1 = (25/100) * (50 + 1)

Q1 = (25/100) * 51

Q1 = 12.75

So, Q1 is the 13th data point in the ordered list.

Q1 = 1.1

So, Q1 (the 25th percentile) is 1.1 Mbps.

User Lubiluk
by
8.4k points