Question

The stem and leaf plot below shows the amounts of time (in minutes) customers parked their cars in a parking garage. There were 18 times from weekdays and 21 from weekends. Use the plot to answer the questions.

Answer 1

I have included the work in the picture attached below. Feel free to ask for clarification if needed.

Weekday range: 46 minutes
Weekends range: 47 minutes

Weekends had more 160s times

Weekdays had greater median parking time

Answer 2

Hey!

Range is the difference between the greatest and lowest numbers.

Weekdays:

Greatest: 198
Lowest: 152

198 - 152 = 46

Range = 46

Weekends:

Greatest: 199
Lowest: 152

199 - 152 = 47

Range = 47

(a) Weekdays ⇒ 46
Weekends ⇒ 47
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(b) To see which had more, count how many numbers are on each side where it says 16(160)

Weekdays: 4
Weekends: 5

Answer ⇒ Weekends
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(c) Median is the middle number when ordered from least to greatest. The numbers are already ordered.

Weekdays = 18 numbers
The median is the average of the 9th and 10th number

9th and 10th # = 174 + 176

174 + 176 = 350

350 ÷ 2 = 175

Median ⇒ 175

Weekends:

There are 21 numbers. The median is the 11th number.

The 11th number is 177

Median ⇒ 177

(c) Greater median ⇒ Weekends