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mars1129 [50]
3 years ago
8

Ms. Williams wants to analyze the scores for the first unit test of her NC Math 1 class

Mathematics
2 answers:
marishachu [46]3 years ago
6 0

Answer:

Mean:79

Median:81

Standard deviation:15

Interquartile range:22

kondor19780726 [428]3 years ago
6 0

Mean (aka average)-79.8928

<em>add all the numbers together and divide by how many numbers there are </em>

<u>sum of terms-2237</u>

<u>number of terms-28</u>

Median- 81

I do it this way-

order the numbers from least to greatest

cross off the front number and back number until you are left with a middle

in this case there were 2

80 and 82

the average of those two is 81

Standard Deviation-15.37237

Interquartile Range-22.5

<em>25th percentile-71</em>

<em>50th percentile-81</em>

<em>75th percentile-93</em>

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