Q: 2.

A survey was taken on how much trust people place in the information they read on the Internet. Construct a categorical frequency distribution for the data. A = trust in everything they read, M = trust in most of what they read, H = trust in about one-half of what they read, S = trust in a small portion of what they read

M M M A H M S M H M S M M M M A M M A M

M M H M M M H M H M A M M M H M M M M M

Q: 3.

Construct a histogram to represent the data shown for the record high temperatures for each of the 50 states

Class boundaries Frequency

99.5-104.5 2

104.5-109.5 8

109.5-114.5 18

114.5-119.5 13

119.5-124.5 7

124.5-129.51

129.5-134.5 1

Make a Frequency polygon Curve, and Cumulative frequency polygon.

Q: 4.

This frequency distribution shows the number of pounds of each snack food eaten during the Super Bowl. Construct a pie graph for the data.

Snack Pounds (frequency)

Potato chips11.2 million

Tortilla chips 8.2 million

Pretzels4.3 million

Popcorn 3.8 million

Snack nuts 2.5 million

Q: 4.

At an outpatient testing center, the number of cardiograms performed each day for 20 days is shown. Construct a stem and leaf plot for the data.

25 31 20 32 13 14 43 02 57 23 36 32 33 32 44 325244 5145.

Q: 5.

Teacher Salaries: The following data represent salaries (in dollars) from a school district in Okara, Pakistan.

10,000 11,000 11,000 12,500 14,300 17,500 18,000 16,600 19,200 21,560 16,400 107,000

1.First, assume you work for the school board in Okara and do not wish to raise taxes to increase salaries. Compute the mean, median, and mode, and decide which one would best support your position to not raise salaries.2. Second, assume you work for the teachers 'union and want a raise for the teachers. Use the best measure of central tendency to support your position.3. Explain how outliers can be used to support one or the other position.4. If the salaries represented every teacher in the school district, would the averages be parameters or statistics?5. Which measure of central tendency can be misleading when a data set contains outliers?6. When you are comparing the measures of central tendency, does the distribution display any skewness? Explain.

Q: 6. Twelve major earthquakes had Richter magnitudes shown here.

7.0,6.2, 7.7, 8.0, 6.4, 6.2, 7.2, 5.4, 6.4, 6.5, 7.2, 5.4

, nd (a) the mean, (b) the median, (c) the mode (d) G.M (e) H.M (f) Quartiles

Which would you consider the best measure of average?

Q:7.

The percentage of foreign-born population for each of the 50 states is represented below. Do you think the mean is the best average for this set of data?

Percentage Frequency

0.8-4.4 26

4.5-8.1 11

8.2-11.84

11.9-15.55

15.6-19.22

19.3-22.91

23.0-26.61

nd (b) the median, (c) the mode (d) G.M (e) H.M (f) Quartiles. And make appropriate graphs.

(g)Find Variance, Standard deviation and coefficient of variance.

Q: 8.

This frequency distribution represents the commission earned (in dollars) by 100 salespeople employed at several branches of a large chain store.

Class limitsFrequency

150-158 5

159-167 16

168-176 20

177-185 21

186-194 20

195-203 15

204-212 3

Find Mean deviation, Interquartile Range, Coefficient of variance.

(b) Find A.M, G.M, H.M and Median and Mode.

(c) Make suitable graphs.