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I’m having a hard time understanding how to find the z-score c)? And also the histogram on (2.
age (years) frequency 16. 16, 17, 17,17-17, l7,门,17,17,17, 17,17,17 16 17,17, 17, 17, 17,17,17,7,18, 1818, 18, 18,18 17 18,18,18,18, 18, 18, 18, 18, 19, 19, 19,19,1,19 18 19 32 374 2 52 14 1, 11,11, 22,22, 30 30 903 、50 50 a 903 mean: 18.0% median:18 mode:/ midrange:_23 a) Compute the mean, median, mode, and midrange b) Compute the standard deviation and variance 243b)(2) 4 9 72 7192 |(0.003b)r(14)ao.o504 15.5236 (15.5236)(2)-31.0472 | 142.5636|(142.563叭(リ1142.5 17-18.06 1.06 .1236 1123)x(2tandard deviation: 2.073 | | -0.06 | 0.0036 О. 9410.8836 18-18.06 |(o. 8836), (9)-7variance: 4.2 19-18-06 22-18.063.94 | 3, o-18.06 11-94 214.82 4.296 50 c) Compute the z-score (aka standardized score) for the 7th score and for the 38th score in the data set. lower z-score: higher z-score:
2) Consider the given histogram. Use the midpoint of each class (each bar) to represent the data value for that class. The number at the top of each bar is the class frequency for that class. The class boundaries are given below the bars. 10 15.5 20.5 25.5 30.5 35.5 40.5 45.5 (grams) a) Fill in the table with the midpoints and the frequencies. Calculate the mean, median, mode, and midrange by using the midpoints as data. midpoints frequencies mean: median: mode: midrange:
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