1u Spring 2018 Bailley Marwitz&1 21018 4 14 PM Homework: HW #3 Score: 0 of 1 pt

Question

1u Spring 2018 Bailley Marwitz&1 21018 4 14 PM Homework: HW #3 Score: 0 of 1 pt 3.3.21 250f 35 (29 complete) HW Score: 79.76%, 27.92 of 35 pts Question Help * Use the tollowing ceill phone airport data speeds (Mbps) from a particular network. Find Ps 0.1 0.7 1.8 36 95 0.3 07 1.9 3 6 12.5 0 3 0.7 2.5 4.4 13 5 04 0.8 2.5 4.6 14.1 05 0.9 2.6 52 14.2 0.5 1.4 2.8 5.7 14 4 05 1.4 29 6.1 15.1 0.6 1.5 29 6.5 15 2 07 1.8 3.4 6 8 156 1.8 3.6 7.6 25.2 Ps 126 Mbps (Type an integer or a decimal. Do not round ) Enter your answer in the answer box and then click Check Answer All parts showing Clear All Final Check

Explanation / Answer

You have to find 30th percentile

Percentile is a number where a certain percentage of scores fall below that percentile.

Steps to find kth percentile.

1) Order all of the values in the data set in ascending order (least to greatest).

2)     Multiply k percent by the total number of values, n. This number is called the index.

3) If the index is a whole number, count the values in the data set from least to greatest until you reach the index, then take the index and the next greatest number and find the average.

4) If the index is not a whole number, round the number up, then count the values in the data set from least to greatest, until you reach the index.

Here n = 50   

Index = 50*0.30 = 15

Index is whol number so kth percentile is the average of that corresponding value in your data set and the value that directly follows it.

P30 = ( 0.9 + 1.4 )/2 = 1.15

P30 = 1.15

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