Question

Males	Females
620	660
570	590
540	540
580	560
590	610
580	590
480	610
620	650
570	600
610	620
590	630
570	640
610	590
590	640
570	580
550	560
530	570
560	560
620	600
520	600
560	590
620	590
580	590
610	630
530	560
480	600
590	560
620	560
590	560
580	560

1. Summarize the data visually. This will require referencing chapter 2 and determining the best way to visually describe the writing SAT scores. You may analyze the data by gender, or you can group scores together for your visual analysis.

2. Summarize the data numerically. For both male and female writing SAT scores, you should calculate appropriate measures of central tendency as well as appropriate measures of dispersion. Make sure to discuss what these numbers mean and how they describe the data. Hint: reference Chapter 3

3. Summarize the data numerically. For both male and female writing SAT scores, you should calculate appropriate measures of central tendency as well as appropriate measures of dispersion. Make sure to discuss what these numbers mean and how they describe the data. Hint: reference Chapter 3   

( INCLUDE Excel screenshots)  

Answer 1

The measures of central tendencys are, Mean, Mode, Median.

Mean(Males) = 574.33 & Mean(Females) = 593.33

Mode(Males) = 620 & Mode(Females) = 560

Median(Males) = 580 & Median(Females) = 590

These measures provide a single value that discribes the way in which group of data cluster around a central value.

The Measures of dispersions are, Range, Interquartile Range, Standard Deviation.

Range (Males) = 140 & Range (Females) = 120

Interquartile Range (Males) = 45 & Interquartile Range (Females) = 50

Range (Males) = 38.30 & Range (Females) = 31.44

Measures of dispersions are used to determine spread of a data and variation of the data around central value.