aubreykeller77
Answered

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Mrs. Jones wanted to know whether the average grades of her students in her first period and last period classes were different. Her data is shown.
First period: 80, 84, 78, 90, 96, 88, 98, 74, 80, 80, 78, 82
Last period: 88, 84, 86, 88, 92, 94, 96, 78, 88, 80, 84, 86
Use the information to complete the statement
The median of class with the greatest median is ???

Sagot :

the last period class had a greatest median of 87 while first period had a median of 81. good luck!!
lunathemoonchild13
The median would be the center number of data points.

Let’s list them

First period:

80, 84, 78, 90, 96, 88, 98, 74, 80, 80, 78, 82

Last period;

88, 84, 86, 88, 92, 94, 96, 78, 88, 80, 84, 86

Let’s put the two classes in order from least to greatest.

First period:

74, 78, 78, 80, 80, 80, 82, 84, 88, 90, 96, 98

Last period:

78, 80, 84, 84, 86, 86, 88, 88, 88, 92, 94, 96

Since there are an even amount of each data set, we need to find the two center points, add them, and divide by 2.

Center points for first period:

80 and 82

Center points for last period:

86 and 88

Add them then divide by 2

( 80 + 82 )/2
162/2
81

( 86 + 88 )/2
174/2
87

Last period had the greatest median with a median of 87.
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