Question

anna keeps track of how much time she goes running each week for 13 weeks. she created the frequency table with the data she collected. how many hours did anna spend running? anna spent hours running. (type a whole number, fraction, or mixed number)

Explanation:

Step1: Convert mixed number to improper fraction

$5\frac{1}{2}=\frac{5\times2 + 1}{2}=\frac{11}{2}$，$6\frac{1}{2}=\frac{6\times2+1}{2}=\frac{13}{2}$

Step2: Calculate the total hours for each row

For the row with $5\frac{1}{2}$: $\frac{11}{2}\times2 = 11$
For the row with $6$: $6\times5=30$
For the row with $6\frac{1}{2}$: $\frac{13}{2}\times5=\frac{65}{2}=32.5$
For the row with $7$: $7\times1 = 7$

Step3: Sum up all the results

$11+30 + 32.5+7=80.5=\frac{161}{2}=80\frac{1}{2}$

Answer:

$80\frac{1}{2}$