Chapter 2, Problem 21P

### Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

Chapter
Section

### Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

# Recent research suggests that the amount of lime that parents spend talking about numbers can have a big impact on the mathematical development of their children (Levine, Suriyakham, Rowe, Huttenlocher, & Gunderson. 2010). In the study, the researchers visited the children’s homes between the ages of 14 and 30 months and recorded the amount of “number talk” they heard from the children’s parents. The researchers then tested the children’s knowledge of the meaning of numbers at 46 months. The following data are similar to the results obtained in the study. Children’s Knowledge of-Numbers Scores for Two Groups of Parents Low Number Talk Parents High Number Talk Parents 2, 1, 2, 3, 4 3, 4, 5, 4, 5 3, 3, 2, 2, 1 4, 2, 3, 5, 4 5, 3, 4, 1, 2 5, 3, 4, 5, 4 Sketch a polygon showing the frequency distribution for children with low number-talk parents. In the same graph, sketch a polygon showing the scores for the children with high number-talk parents. (Use two different colors or use a solid line for one polygon and a dashed line for the other.) Does it appear that there is a difference between the two groups?

To determine

To Construct: Draw two polygons in a single graph for two groups of Parents.

To determine: There is a difference between the two groups.

Explanation

Given info:

The data represents the Quiz scores for two groups of Parents (Low and High).

Calculation:

Software procedure:

Step-by-step procedure to obtain the frequency distribution table using the SPSS software:

• Enter the data under Low and High column.
• Go to Analyze > select Descriptive statistics > click on Frequencies.
• Highlight the column label (Low and High) in the left box then click arrow to receive it into variable box.
• Select the Display frequency table > click OK

Output using the SPSS software is given below:

Figure-1

After that open new data file, enter the Low variable frequencies in FL and the High variable frequencies in FH. Also create a new variable X, which includes combined scores...

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